Skip to main content

Bridges in Mathematics Grade 3

Websites with (*) in front of link might not work with all browsers.

Unit 1 – Addition & Subtraction Patterns

Building Expressions – Click on a number to complete the addition or subtraction expression before time runs out. The program allows you to select from a variety of formats, with unknowns in various positions.

Deep Sea Duel – Collect cards that add up to a specified sum. Choose how many cards, types of numbers, and level of strategy.

Math Lines – Race to pair numbers that add up to 10. Or select this version of Math Lines and choose your own target number.

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

Missing Number – Select a target number (the total) and challenge students to place the missing addend in a number sentence. Timed for one minute. Includes suggestions for playing as a class game.

Number Fact Bingo – Choose from 6 bingo games–highlighting a variety of math strands–to use with an entire class. Print the bingo game cards and use an online machine to select the numbers. Combines desktop and online resources.

* Speedy Pictures – Add numbers modeled by one of the following: 10 or 20 bead Rekenrek, dice, fingers, egg cartons, money discs. Adjust the viewing time as needed. Since the pictures are only shown for a short time, students must use addition strategies to add the beads. Uses Java.

* Sums Stacker – Drag values from stack to stack until the sum of each stack equals the target number. Choose from values shown in: dice, numbers, money. Try to make as few moves as possible. Choose from solve or race modes.

Number Balance – Click and drag number tile into expressions on a number balance and determine whether the expressions are equivalent. Intended for teacher-led, group investigations.

Speed Grid Subtraction – Select two numbers from a grid that equal the given difference. Timed. More advanced levels with multi-digit numbers are also available: Speed Grid Subtraction 2 and Speed Grid Subtraction 3.

Sum Sense Subtraction – Drag and drop number cards–with unknowns in all positions–to make a subtraction equation.

Adding 10 Depthcharger – Add 10 to a number to reach the target sum. First, add ten on the visual display of base ten pieces by pressing the “add 10” button. Then type in the correct sum and push “fire.” Visual also displays a vertical number line.

Adding 2-Digit Numbers – Break two-digit numbers into tens and ones and then add them.

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

Catapult Count On – Add a single digit to a double digit to jump to the next multiple of ten on a number line and destroy a castle. Pull down on the catapult to adjust the number added on the number line. Check “hide jumps” to use mental math. See help video for demo.

Fridge Magnet Addition Game – Add double-digits with unknowns in various positions by dragging magnets on a fridge. Choose timed or not timed versions.

Ghost Blasters III – Two player game in which students take turns clicking on the answer to two-digit plus two-digit addition problems.

ICT Numberline Games – Site features a variety of number line games.

Speed Grid Addition – Select two numbers from a grid that equal the given sum. Timed. More advanced levels with multi-digit addition are also available: Speed Grid Addition 2 and Speed Grid Addition 3.

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

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

Unit 2 – Introduction to Multiplication

Camel Times Tables – Determine the total number of pieces of fruit on a tray holding plates that each have the same number of pieces of fruit.

Connect the Dots: Multiples – In these connect the dot pictures, players set the counting sequence. Set the pictures to practice counting by 1s, 5s, 10s, or set your own number to practice multiples.

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.

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.

Bugs in the System – Click and drag bugs, putting them into the correct color position on a bar graph to count totals.

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

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.

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.

Unit 3 – Multi-Digit Addition & Subtraction

Adding 2-Digit Numbers – Break two-digit numbers into tens and ones and then add them.

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.

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.

ICT Numberline Games – Site features a variety of number line games.

Match Around 10s – Click on two cards, trying to find a two-digit number and a representation of that number rounded to the nearest 10. Find additional rounding games on Math Nook.

Math Balloons Rounding – View a rounding problem (example: 73 Rounds to 80) and click on True or False. Correct answers pop the balloons. Find additional rounding games on Math Nook.

Who Wants to Be a Mathionaire? – Read the rounding question and click on the correct answer in this rounding version of Who Wants to Be a Mathionaire?

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

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.

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.

Place the Penguin – Place penguins on unit & ten charts to represent expanded form of a given number. Level 1 = units & tens. Level 2 = units, tens, hundreds.

2 Digit Addition with Regrouping – Type the total for each column into the box below to practice 2-digit addition with regrouping.

Addition – Regrouping – Click and drag the dots (ones) to the box at the bottom of the column, then click and drag the tens to the box at the bottom of the tens column. If 10 dots are collected, you must click and drag into the tens column.

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.

Ghost Blasters III – Two player game in which students take turns clicking on the answer to two-digit plus two-digit addition problems.

Number Pyramid – Help Molly through the pyramid doors by completing addition and subtraction equations with the correct number or symbol. “Really hard” level uses 3 digit addition and subtraction.

Unit 4 – Measurement & Fractions

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

Bang On Time – Time is displayed in words. Player stops clock when hands are in matching position.

Fairy Clock – Displays an analog clock face in which the time can adjust in increments of 1, 5, 15, 30, or 60 minutes. A digital clock may also be added. Also see Class Clock.

Hickory Dickory Clock – Feed the mouse and avoid the cat by correctly reading the analog clock. Includes half past, quarter to, and quarter past.

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.

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.

Stop the Clock 3 – Match five times shown on digital and analog clocks.

Liquid Measure – Click and drag pipe connectors and water containers so that the amount of liquid specified in a jug will drain into a container with the correct capacity.

Number Sense – Arrange 3 digits to create a 3-digit number larger than a given 3-digit number.

Bamzooki Fractions Basic – Click on the number button to divide the floor arena into the number of segments that match the denominator.  Then click on floor segments to color in divisions to represent the numerator.

Battleship Numberline: Fractions – Click on a 0-1 number line to identify where a given fraction is located.

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.

Fractions Naming – Write the fraction represented by the highlighted part of a shape.

Fractions, Parts of a Whole – Model fractions as parts of a whole circle or square. Specify the number of equal parts and then select some of them to model a fraction.

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

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.)

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.

Pattern Block Fractions – Click on a given fraction of a pattern block design. Game uses thirds and halves.

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.

Shading Blocks – Color blocks to represent a given fraction. Five levels from which to select. At the lowest level players shade in 1/2 of 4,6,8, or 10; at the highest level, shade in 1/3 or 2/3 of 6, 9, or 12. TESiboard activity.

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.

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.

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 – Multiplication, Division & Area

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.

Repeated Sets – Game Version – Count the number of bags and the total fruit in each bag to calculate the total. See how many sets you can count in 60 seconds. TESiboard activity. A Teaching Tool version of this activity is also available.

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.

Camel Times Tables – Determine the total number of pieces of fruit on a tray holding plates that each have the same number of pieces of fruit.

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

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.

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.

Repeated Sets – Game Version – Count the number of bags and the total fruit in each bag to calculate the total. See how many sets you can count in 60 seconds. TESiboard activity. A Teaching Tool version of this activity is also available.

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

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.

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

Area Shapes Shoot – Click on the figures that have a given area.

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.)

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.

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.

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

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

Unit 6 – Geometry

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.

Geometric Shapes with Tangrams – Using this video tutorial, learn how to create paper tangram pieces. After creating pieces, viewers are asked to create puzzles on their desks and then create the same puzzle with virtual tangram pieces on the screen.

Polygon Playground – Drag shapes to explore polygons and create pictures, tessellations, symmetrical objects, and patterns.

Tangram Game – Click and drag shapes to create tangram puzzles in this Cyberchase activity.

Tangram Puzzles – Click and drag pieces to complete a variety of online tangram puzzles from NCTM.

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.

Quadrilateral Quest – Drag and drop shapes with given properties into the area at right.

Quadrilateral Shapes Shoot – Click on a specified type of quadrilateral in this arcade game.

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.

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

Bamzooki Fractions Basic – Click on the number button to divide the floor arena into the number of segments that match the denominator.  Then click on floor segments to color in divisions to represent the numerator.

Fraction Flags – Click on an array to paint a flag with specific combinations of halves and quarters.

Pattern Block Fractions – Click on a given fraction of a pattern block design. Game uses thirds and halves.

Shading Blocks – Color blocks to represent a given fraction. Five levels from which to select. At the lowest level players shade in 1/2 of 4,6,8, or 10; at the highest level, shade in 1/3 or 2/3 of 6, 9, or 12. TESiboard activity.

Thirteen Ways of Looking at a Half – Find 13 different ways to show one-half by highlighting 4 out of 8 congruent triangles that are arranged in a square.

Unit 7 – Extending Multiplication & Fractions

Camel Times Tables – Determine the total number of pieces of fruit on a tray holding plates that each have the same number of pieces of fruit.

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.

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.

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.

Repeated Sets – Game Version – Count the number of bags and the total fruit in each bag to calculate the total. See how many sets you can count in 60 seconds. TESiboard activity. A Teaching Tool version of this activity is also available.

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.

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.

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.

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.

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

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.

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.

Shading Blocks – Color blocks to represent a given fraction. Five levels from which to select. At the lowest level players shade in 1/2 of 4,6,8, or 10; at the highest level, shade in 1/3 or 2/3 of 6, 9, or 12. TESiboard activity.

Battleship Numberline: Fractions – Click on a 0-1 number line to identify where a given fraction is located.

Fraction Pieces – Choose a square or circle as the whole and then place pieces of different sizes and shapes on the whole to see what fraction each represents.

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.

Fractions Naming – Write the fraction represented by the highlighted part of a shape.

Fractions, Parts of a Whole – Model fractions as parts of a whole circle or square. Specify the number of equal parts and then select some of them to model a fraction.

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

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.

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 8 – Bridge Design and Construction: Data Collection & Analysis

Build a Bridge – Survey bridge sites to determine which type of bridge belongs where in this similation.

The Bridge Challenge – Select the correct bridge for the setting in this short simulation.