# 4th Grade Math

## Bridges in Mathematics Grade 4

### Unit 1 – Multiplicative Thinking

__Arithmetic Four__ – Two player game in which students place pieces on the board by answering math problems. Choose from addition, subtraction, multiplication, division. Like Connect 4. Uses Java.

__Drag Race Division__ – Race against the computer or other students by clicking on the correct quotient in a series of division problems. Also try a similar game, __Demolition Division__.

__Math Madness__ – Fill in the addend, subtrahend or factor to score points in this basketball arcade game.

__Meteor Multiplication__ – As meteors with multiplication problems approach a star station showing a given product, fire them down by clicking on the expression that goes with the product.

__Multiplication Grand Prix__ – Race against the computer or other students by clicking on the correct product in a series of multiplication problems. Also try a similar game, __Tractor Multiplication__.

__Sum Sense Multiplication__ – Drag and drop number cards–with unknowns in all positions–to make a multiplication equation.

__Factorize__ – Find all the factorizations of a number and draw the rectangular arrays on a grid. Also see __Factorize 2__.

__Factors & Multiples with Dick and Dom__ – In this humorous Dick and Dom presentation from the BBC, players must find factors and multiples in a series of short games.

__Ghost Blasters__ – Blast every ghost that displays a multiple of the number you choose. Game may be set for multiples of any number from 2-20.

__Prime Composite Applet__ – Explore prime and composite numbers by clicking on the +/- button to locate a given number. View different visuals of the number by reordering the circled numbers–the prime factorization–on the right side.

__Prime Time__ – Earn points by landing on prime number spaces. The game also includes probability as players must choose which random number generator to use. On the Calculation Nation homepage, use “guest pass” to access the game list and play against the computer. Click on the title, Prime Time.

__Speed Grid Challenge__ – Race against the clock to find factors to match the product. Set the number of questions and length of game. Includes a few 1 digit by 2 digit problems.

__Table Numbers__ – Choose a factor from 2-9, then click on one of three numbers that represents a multiple of the chosen factor.

__Factor Dazzle__ – Click on all the factors of target numbers set by opponents. Use “guest pass” to enter game list and play against the computer or register (free) to play against other students online.

__Times Square__ – Players race to get 4 products in a row on the game board. Use “Guest Pass” to enter and play against computer.

__At the Vets__ – Use online tools to measure the height, length, and weigh of animals at the vets. Uses centimeters and grams. TESiboard.

__Build a Shed__ – Explore unit conversions within the metric system as you build a shed, converting between mm, cm, and meters. Build in 3 stages with 5 questions each.

__Horrendous Soup__ – Click and drag ingredients into a pot to make horrendous soup. Then view a recipe in which mass, capacity, and the distance of the ingredients must be converted to different metric measurements in order to get the recipe right. View an __instructional video__ for the game.

__Matching Math: Metric Length__ – Click on cards to show matching measurements. For example, click on “1000 meters” and “1 kilometer.”

__Matching Math: Metric Weight__ – Click on cards to show matching measurements in metric weight: grams, milligrams, kilograms.

__Measure Capacity – Complex__ – Pour the contents of containers into a measuring jug and read milliliters on the metric scale. Set the program for simple or complex scale readings. TESiboard.

__Measurement Mania: Metric__ – Convert metric measurements and drag the pointer on the ruler to demonstrate the correct answer.

__Mostly Postie__ – Click and drag package onto scales and enter weight in grams or kilograms.

__Reading Weight, Length, and Height__ – Read the scales to measure metric weight, length and height, then set a counter with your answer. TESiboard.

### Unit 2 – Multi-Digit Multiplication & Early Division

__Build a Shed__ – Explore unit conversions within the metric system as you build a shed, converting between mm, cm, and meters. Build in 3 stages with 5 questions each.

__Measurement Mania: Metric__ – Convert metric measurements and drag the pointer on the ruler to demonstrate the correct answer.

__Measurement Workshop__ – Using the “build” option, select a mode (whole numbers, whole and half numbers, decimals, or fractions), then click on the preferred type of measurement (imperial or metric) and use rulers to build a ruler city. In “play” mode, the buildings are created by the computer and players must measure them. Watch an __instructional video here__.

__Sum Sense Division__ – Drag and drop number cards–with unknowns in all positions–to make a division equation.

__Sum Sense Multiplication__ – Drag and drop number cards–with unknowns in all positions–to make a multiplication equation.

__Arithmetic Four__ – Two player game in which students place pieces on the board by answering math problems. Choose from addition, subtraction, multiplication, division. Like Connect 4. Uses Java.

__Math Magician__ – Using this timed program, student practice facts, selecting from addition, subtraction, multiplication & division. You can specify exact facts to practice. Example: practice +3 addition facts, 20 questions in 1 minute.

__Number Sense__ – Arrange 3 digits to create a 3-digit number larger than a given 3-digit number.

__At the Vets__ – Use online tools to measure the height, length, and weigh of animals at the vets. Uses centimeters and grams. TESiboard.

__Build a Shed__ – Explore unit conversions within the metric system as you build a shed, converting between mm, cm, and meters. Build in 3 stages with 5 questions each.

__Horrendous Soup__ – Click and drag ingredients into a pot to make horrendous soup. Then view a recipe in which mass, capacity, and the distance of the ingredients must be converted to different metric measurements in order to get the recipe right. View an __instructional video__ for the game.

__Matching Math: Metric Length__ – Click on cards to show matching measurements. For example, click on “1000 meters” and “1 kilometer.”

__Matching Math: Metric Weight__ – Click on cards to show matching measurements in metric weight: grams, milligrams, kilograms.

__Measurement Mania: Metric__ – Convert metric measurements and drag the pointer on the ruler to demonstrate the correct answer.

__Reading Weight, Length, and Height__ – Read the scales to measure metric weight, length and height, then set a counter with your answer. TESiboard.

__Coloring Remainders in Pascal’s Triangle__ – Click on all entries in Pascal’s triangle that have a given remainder.

__Drag Race Division__ – Race against the computer or other students by clicking on the correct quotient in a series of division problems. Also try a similar game, __Demolition Division__.

__Quotient Cafe__ – Select a food and characters to practice division with remainders. Use dividends from 1-500 and divisors from 1-50. As the food is doled out, students explore partial quotients (“chunking”) in a long division problem, recording each step of the problem as they go. Press the calculator icon at lower left for help with calculations. NCTM.

__Remainders Count__ – Click and drag number cubes to form an equation that will result in the largest remainder. Type in the quotient and remainder.

### Unit 3 – Fractions & Decimals

__Concentration__ – Click on the desired mode to play a game in which you match each shape, array, percent, or fraction visual with its name. The game will play an audio recording of the name.

__Dig It__ – Create a fraction from a given set of numbers and locate that fraction on a number line that runs across a field of precious stones. On the Calculation Nation homepage, use “guest pass” to access the game list and play against the computer. Click on the title, Dig It.

__Dirt Bike Comparing Fractions__ – Click on <, =, or > to compare two fractions. Players pull dirt bikes in this tug-o-war, competing against other online players or the computer.

__Equivalent Fractions__ – With support from visuals with the area model, students type numbers into empty boxes to create a series of equivalent fractions. View an additional __page of fractions here__.

__Equivalent Fractions__ – Divide and shade circles or squares to create equivalent fractions and find the fractions on a number line.

__Find a Fraction of a Number__ – In this interactive whiteboard activity, students find fractions of whole numbers using fraction strips for visual support.

__Fraction Bars__ – Create fraction bars of different sizes and colors to model fractions.

__Melvin’s Make a Match__ – Click on bottles to match equivalent fractions in this Cyberchase game.

__Ordering Fractions Game__ – Click and drag fractions to put in vertical order. The first level uses unit fractions; subsequent levels contain fractions with unlike denominators.

__Pizza Bears__ – Bears share pizzas. Select from 1-5 bears and 1-6 pizzas. Teaching tool for whole group instruction. Answers are not given; it’s meant to be used as a manipulative for exploration. Use a knife to cut pizzas into desired number of pieces.

__Clara Fraction Ice Cream Shop__ – View an order for ice cream with improper fractions. Convert to mixed numbers, then click on the ice cream flavor and the scoop type, then on the cone. Continue adding ice cream to the cone until the order is complete. Earn as much money as you can in 5 minutes. Watch an __instructional video__ for the game before you begin.

__Drop Zone__ – Create a sum of 1 by filling your launcher with a combination of fractional bars and dropping them on top of another stack of fractions. On the Calculation Nation homepage, use “guest pass” to access the game list and play against the computer. Click on the title, Drop Zone.

__Equivalent Fractions__ – With support from visuals with the area model, students type numbers into empty boxes to create a series of equivalent fractions. View an additional __page of fractions here__.

__Equivalent Fractions__ – Divide and shade circles or squares to create equivalent fractions and find the fractions on a number line.

__Fraction Feud__ – Drag and drop number cards to create fractions that are larger or smaller than your opponent’s. On the Calculation Nation homepage, use “guest pass” to access the game list and play against the computer. Click on the title, Fraction Feud.

__Fraction Tracks__ – In this 2 player game, students must add, compare, and find equivalent fractions in order to race from 0-1, moving across a series of fraction tracks.

__Frosty Fractions__ – In this two-player game, students add fractions then cover the sum with a snowflake game piece. The first to cover three numbers in a row wins.

__Order & Compare Fractions with Dick & Dom__ – Find common denominators to order & compare fractions. From the BBC, this game resembles a Monty Python movie.

__Battleship Numberline: Decimals__ – Click on a 0-1 number line to identify where a given decimal is located.

__Decimals, Fractions, and Percentages Grid__ – View a hundreds grid with a random number of squares in 2 colors and determine the percent, fraction, and decimal for both colors. Use with one student or an entire class. Three levels of play. TESiboard.

__Estimate__ – On the main page, view a key to the numbers estimated at each “stage.” Then click “begin.” Now choose a stage; for example, Stage 6 uses hundredths on the number line. Estimate what number is indicated by the arrow on the number line. Click “reveal” to check your accuracy.

__Matching Fractions Decimals Percentages__ – In this matching memory game, try to find two cards with the same value. Play online or download a set of cards.

__Number Line Drop: Tenths__ – Students drop numbers into place on a moving number line. Also see __Number Line Drop: Hundredths__ and __Number Line Drop: Thousandths__. Levels allow users to show all numbers or use a number line with blanks. Adjust settings by ability level. TESiboard.

__The Legend of Dick and Dom: Decimals__ – Players watch a humorous, interactive video, then must: add and order decimals, convert grams to kilogram, convert percents and fractions to decimals, and find the biggest decimal.

__Fraction Number Line__ – Click and drag fractions from 0-2 and place on a number line. This activity also shows the equivalents in decimals and percents.

__Mathman Fractions__ – View a dot on a number line, determine the fraction, then eat the ghost with that fraction to earn points.

__Mission 2110: Converting Fractions to Decimals__ – Crack this BBC Maths futuristic mission by converting fractions to decimals. Drag and drop cards matching fraction to percent, use a calculator to convert fractions to decimals, and select the decimal equivalent of given fractions.

__Slide to the Top__ – Arrange numbers from least to greatest on a number line. Work quickly and accurately to better your score. Choose from fractions, fractions & decimals, and fractions/decimals/percents.

### Unit 4 – Addition, Subtraction & Measurement

__Addition of Three-Digit Numbers__ – Type in numbers between 1 and 999 to add. Numbers are automatically entered into an equation; base ten pieces are created to match. If ten or more pieces are in any column, you must push the “regroup” button to continue solving the problem.

__Amoeba Addition Game__ – Practice adding 3 digits by splitting numbers. Look for title “Addition by Splitting” game.

__Dartboard Rounding__ – View a dartboard and click to reveal numbers rounded to the nearest 10, 100, or 1000. In an alternate version, players may input their own answers. Use as a whiteboard resource in a whole class activity or invite students to play independently.

__Drag and Drop Math__ – Drag and drop numbers to complete traditional algorithms. Type the final answer in the box to check. Choose from addition, subtraction, multiplication, or division, select the number of digits in each problem, and decide on the number of problems to complete. View an __instructional video here__.

__Glowla’s Estimation Contraption__ – Mentally round and add numbers and type in the answer. Round numbers to the tens place in the first level and progress to larger numbers.

__Home Run Derby Math__ – Estimate your answer, click “done” and then “hit.” Game may be played with addition, subtraction, or multiplication problems and emphasizes skills in rounding numbers. View an __instructional video__ here.

__Amoeba Subtraction Game__ – Practice subtracting 3 digits by splitting numbers. Look for title “Subtraction by Splitting” game.

__Base Blocks Subtraction__ – Subtract multi-digit numbers using base ten blocks. Uses Java.

__Count on Convict__ – Players must type in each jump on the “number line” (a convict’s escape tunnel) and then add them all together to find the difference between two double-digit numbers.

__ICT Numberline Games__ – Site features a variety of number line games.

__At the Vets__ – Use online tools to measure the height, length, and weigh of animals at the vets. Uses centimeters and grams. TESiboard.

__Build a Shed__ – Explore unit conversions within the metric system as you build a shed, converting between mm, cm, and meters. Build in 3 stages with 5 questions each.

__Horrendous Soup__ – Click and drag ingredients into a pot to make horrendous soup. Then view a recipe in which mass, capacity, and the distance of the ingredients must be converted to different metric measurements in order to get the recipe right. View an __instructional video__ for the game.

__Matching Math: Metric Length__ – Click on cards to show matching measurements. For example, click on “1000 meters” and “1 kilometer.”

__Matching Math: Metric Weight__ – Click on cards to show matching measurements in metric weight: grams, milligrams, kilograms.

__Measure Capacity – Complex__ – Pour the contents of containers into a measuring jug and read milliliters on the metric scale. Set the program for simple or complex scale readings. TESiboard.

__Measurement Mania: Metric__ – Convert metric measurements and drag the pointer on the ruler to demonstrate the correct answer.

__Measurement Workshop__ – Using the “build” option, select a mode (whole numbers, whole and half numbers, decimals, or fractions), then click on the preferred type of measurement (imperial or metric) and use rulers to build a ruler city. In “play” mode, the buildings are created by the computer and players must measure them. Watch an __instructional video here__.

__Mostly Postie__ – Click and drag package onto scales and enter weight in grams or kilograms.

__Reading Weight, Length, and Height__ – Read the scales to measure metric weight, length and height, then set a counter with your answer. TESiboard.

__Bamzooki Mode, Median, Mean, Range__ – Click and drag figures into the correct spot to complete a variety of problems on mode, median, mean, and range.

__Frequency Diagrams with Dick and Dom__ – In this humorous Dick and Dom presentation from the BBC, players must interpret data in a series of short games to produce an antidote to rid a fictional world of the plague.

__Handling Data Game__ – Several different kinds of data are represented in a variety of activities. Players must use bar charts, interpret information, observe & record. Timer is optional.

__Measure It!__ – View a segment next to a ruler and correctly identify its length. Levels include: easy inches (to the nearest half inch), medium inches (to the nearest fourth of an inch), hard inches (to the nearest eighth), and super brain inches (to the nearest sixteenth.)

__Mr. Nussbaum’s Graph Master__ – Students create a bar graph, line graph, and pie chart based on data collected from classmates. The program then asks them eight multiple choice questions based on the data entered. Suggested ages: 7-12.

__The Ruler Game__ – Click on a ruler to identify the location of a given number. Choose from the following levels: wholes, halves, quarters, eighths, sixteenths.

### Unit 5 – Geometry & Measurement

__Alien Angles__ – Slide a bar to position a ray to estimate different angles in order to rescue lost space aliens.

__Angle Estimate Then Measure__ – Estimate an angle then measure with an interactive protractor. Similar resources include: __Angle Inside Shape Estimate and Measure__, __Island Angles__, and __Sailing for Treasure__. TESiboard activities.

__Angle Shoot__ – Click on the correct figure in your choice of several arcade-style shooting games: angles in degrees, angles by name (right, obtuse, acute), triangles by name (scalene, equilateral, isoceles),

__Banana Hunt__ – Click and drag a monkey a given number of degrees around a circle to locate bananas. This challenging game requires precision and accuracy; placement must be within 5 degrees to find any bananas.

__Point the Boat – Angle Practice__ – Click and drag the arrow to rotate a boat the correct number of degrees and rescue a swimmer. Other similar, related activities include: __Point the Boat Real Rescue__, __Search and Rescue Angle Practice__, and __Search and Rescue Enter the Angle__. TESiboard activities.

__Roboidz Angles__ – Complete a variety of missions using knowledge of angles to control & defeat Roboidz

__Star Gazing__ – Locate planets by typing degrees into a telescope in this Cyberchase game.

__2D Shapes with Dick and Dom__ – Recognize a variety of 2D shapes to complete tasks and save the land from the plague.

__Cyberchase Symmetrizer__ – Move your mouse on the “symmetrizer” to experiment with Cyberchase character symmetry.

__Investigating Symmetry in Our Alphabet__ – Click on the letters that have horizontal symmetry, vertical symmetry, or both.

__Reflective Symmetry in Shapes__ – Click on shapes to see lines of symmetry drawn automatically.

__Roboid Symmetry__ – In this futuristic mission, players complete a variety of tasks, creating symmetrical figures and finding lines of symmetry.

__Shapes Sort__ – Click and drag a variety of shapes into the correct categories as they move along an assembly line. Sort by Quadrilaterals (categorized by 4 equal sides, 2 equal sides, no equal sides) or Triangles (equilateral, isosceles, scalene.) To locate this activity, look for “Shapes” toward the bottom of the home page.

__Symmetry Activity__ – Click and drag shapes to complete a symmetrical picture or create your own symmetrical pattern.

__Symmetry and Area Invaders__ – Click and drag shapes to form symmetrical “invaders” that comprise a given area. Then use the creations in a game of space invaders. TESiboard activity.

__Symmetry Sort__ – Click and drag shapes to sort by 0, 1, or 2 lines of reflective symmetry.

__Triangle Sort__ – Drag and drop each triangle into the appropriate category. To locate this activity, look for “Triangle Sort” toward the bottom of the home page.

__Airlines Builder__ – In this Cyberchase game, players must construct 3 different ships with the same perimeter by clicking and dragging edge pieces. After the ship is built, the “seats” are filled to show area. After finding all shapes with a perimeter of 8, find shapes with perimeter of 10.

__Area and Perimeter__ – Using the exercises provided, practice calculating area or perimeter, choosing from three levels of difficulty.

__Chairs__ – This NCTM applet explores how many chairs are needed for different tables in a restaurant. In explore mode, the chair arrangement is displayed. In guess mode, player must enter the correct number of chairs. An almost identical applet from Shodor, __Tables and Chairs__, is also available.

__Polyominoes__ – Use virtual tile to create designs and patterns and explore area. Click on Instructions for general information. Uses Java.

__Shape Explorer__ – Calculate area and perimeter for a given shape and type in the correct answer.

__Square Off__ – Create rectangular force fields using a given perimeter to capture spaceships using knowledge of area and perimeter. Challenging.

__Zoo Designer__ – Click and drag a shape tool to create enclosures that are the correct area and/or perimeter for animals at the zoo.

__Fruit Picker__ – Click on a button showing the degrees needed to rotate in order to pick 6 apples from a tree in just 6 turns.

__Slam Ball__ – Select the most optimal path to launch a ball which slams off the sides of a game board to collect points by hitting tokens along the way. Use “guest pass” to enter game list & play against the computer.

### Unit 6 – Multiplication & Division, Data & Fractions

__Amoeba Multiplication Game__ – View rows and columns that split multi-digit multiplication numbers into partial products. Type in the partial products to solve. Three levels of play.

__Arithmetic Four__ – Two player game in which students place pieces on the board by answering math problems. Choose from addition, subtraction, multiplication, division. Like Connect 4. Uses Java.

__Bamzooki Multiplication & Division__ – Click on the correct number to answer a variety of problems including: single digit multiplication, 2 digit x 1 digit multiplication, and 3 digit/1 digit division with remainders.

__Grid Method__ – Choose any numbers (up to 2-digit by 3-digit) for a multi-digit multiplication expression. Solve as partial products, then add the parts together.

__Quotient Cafe__ – Select a food and characters to practice division with remainders. Use dividends from 1-500 and divisors from 1-50. As the food is doled out, students explore partial quotients (“chunking”) in a long division problem, recording each step of the problem as they go. Press the calculator icon at lower left for help with calculations. NCTM.

__Speed Grid Challenge__ – Race against the clock to find factors to match the product. Set the number of questions and length of game. Includes a few 1 digit by 2 digit problems.

__Airlines Builder__ – In this Cyberchase game, players must construct 3 different ships with the same perimeter by clicking and dragging edge pieces. After the ship is built, the “seats” are filled to show area. After finding all shapes with a perimeter of 8, find shapes with perimeter of 10.

__Area and Perimeter__ – Using the exercises provided, practice calculating area or perimeter, choosing from three levels of difficulty.

__Factor Dazzle__ – Click on all the factors of target numbers set by opponents. Use “guest pass” to enter game list and play against the computer or register (free) to play against other students online.

__Factor Game__ – Click on the factors of target numbers set by an opponent. Play against the computer or a friend.

__Factorize__ – Create rectangular arrays and explore their factors.

__Factorize__ – Find all the factorizations of a number and draw the rectangular arrays on a grid. Also see __Factorize 2__.

__Shape Explorer__ – Calculate area and perimeter for a given shape and type in the correct answer.

__Speed Grid Challenge__ – Race against the clock to find factors to match the product. Set the number of questions and length of game. Includes a few 1 digit by 2 digit problems.

__Square Off__ – Create rectangular force fields using a given perimeter to capture spaceships using knowledge of area and perimeter. Challenging.

__Table Numbers__ – Players race to get 4 products in a row on the game board. Use “Guest Pass” to enter and play against computer.

__Zoo Designer__ – Click and drag a shape tool to create enclosures that are the correct area and/or perimeter for animals at the zoo.

__Clara Fraction Ice Cream Shop__ – View an order for ice cream with improper fractions. Convert to mixed numbers, then click on the ice cream flavor and the scoop type, then on the cone. Continue adding ice cream to the cone until the order is complete. Earn as much money as you can in 5 minutes. Watch an __instructional video__ for the game before you begin.

__Cyber Olympics__ – Analyze data and click on contestants with the fastest practice times to compete in each event. Cyberchase game.

__Equivalent Fractions__ – With support from visuals with the area model, students type numbers into empty boxes to create a series of equivalent fractions. View an additional __page of fractions here__.

__Equivalent Fractions__ – Divide and shade circles or squares to create equivalent fractions and find the fractions on a number line.

__Frequency Diagrams with Dick and Dom__ – In this humorous Dick and Dom presentation from the BBC, players must interpret data in a series of short games to produce an antidote to rid a fictional world of the plague.

__Melvin’s Make a Match__ – Click on bottles to match equivalent fractions in this Cyberchase game.

__Coloring Remainders in Pascal’s Triangle__ – Click on all entries in Pascal’s triangle that have a given remainder.

__Quotient Cafe__ – Select a food and characters to practice division with remainders. Use dividends from 1-500 and divisors from 1-50. As the food is doled out, students explore partial quotients (“chunking”) in a long division problem, recording each step of the problem as they go. Press the calculator icon at lower left for help with calculations. NCTM.

__Remainders Count__ – Click and drag number cubes to form an equation that will result in the largest remainder. Type in the quotient and remainder.

### Unit 7 – Patterns & Problems

__Exploring Patterns__ – Select from several different patterns and explore what happens when you change the “expression” and “number of terms” sliders.

__Find the Function__ – Type in the missing information in your choice of several activities: What is the Input?, What is the Output?, What is the Function?

__Function Machine__ – Click and drag numbers into a function machine, look for patterns, and type in numbers that complete the table.

__Measurement Mania: U.S. Customary__ – Show conversions between inches, feet, and yards on a sliding number line. Involves mental computation that might be challenging for some students.

__Pattern Generator__ – Click and drag the shape, letter, or numbers that completes the pattern.

__Spooky Sequence__ -Type in the missing number in a sequence of square numbers. Play a similar game with triangular numbers at __Spooky Trino__.

__Stop That Creature__ – Click on the operation and the number that defines the rule in this function machine.

__Whole Number Cruncher__ – Type in an input number and determine the function by looking for patterns in the outputs. Expand to include negative numbers in a related activity, __Number Cruncher__.

__Circle 21__ – Drag and drop numbers into overlapping circles so that every circle holds 21. For a greater challenge try __Circle 99__.

__Make 24__ – Arrange number and symbol cards to create an expression that equals 24. For a similar game, see __Make 24__.

__Make 24__ – Click and drag playing cards and operation signs to make 24.

__Number Factory__ – Add, subtract, multiply, and/or divide a set of four numbers to come as close as possible to a target number. Find __background information__ here. Java app.

__Order of Operations Four__ – View an expression and type in the answer using knowledge of order of operations. This is a two player, Connect 4 style game. Choose from several levels. One level includes parentheses.

__Powerlines__ – Drag and drop numbers in cells along a line so that each line equals a target number.

__Primary Krypto__ – Using 5 numbers (1-10) and any of 4 operations, click and drag numbers into squares to arrive at a target number.

__Sum Sense Division__ – Drag and drop number cards–with unknowns in all positions–to make a division equation.

__Sum Sense Multiplication__ – Drag and drop number cards–with unknowns in all positions–to make a multiplication equation.

__Amoeba Multiplication Game__ – View rows and columns that split multi-digit multiplication numbers into partial products. Type in the partial products to solve. Three levels of play.

__Drag and Drop Math__ – Drag and drop numbers to complete traditional algorithms. Type the final answer in the box to check. Choose from addition, subtraction, multiplication, or division, select the number of digits in each problem, and decide on the number of problems to complete. View an __instructional video here__.

__Grid Method__ – Choose any numbers (up to 2-digit by 3-digit) for a multi-digit multiplication expression. Solve as partial products, then add the parts together.