UNIT 1:
Addition and Subtraction Patterns
Parent Resources
Grade 3 Unit 1 Overview An overview of Unit 1 to share with families. (PDF document)
Apps
Number Line App Number Line helps students visualize number sequences and model strategies for addition, subtraction, multiplication, and division. It can be used to represent sequences of numbers, including whole numbers and multiples of a variety of numbers. Available as an app for the iPad or as an online web app.
Number Rack App Compose and decompose numbers using rows of movable, colored beads. iApp and online versions.
Posters
Did your child forget what the doubles plus one facts are? Download the posters below as a reminder!
Addition Fact Strategies Posters & Subtraction Fact Strategy Posters 8 1/2_ x 11_ posters (pdf) that describe and illustrate strategies such as: counting on, doubles, doubles/plus or minus one, make ten, etc. Contribution by a Bridges teacher.
Books
The link below will direct you to books that can be purchased at amazon. These were added with the intention of providing a list of appropriate books that they could check out from our local library. This link was chosen because you can preview the books and see what the cover looks like so it will be easier to find at the library.
Addition and Subtraction Books Visit the Math Learning Center Virtual Bookshelf for titles on addition and subtraction.
Apps
Number Line App Number Line helps students visualize number sequences and model strategies for addition, subtraction, multiplication, and division. It can be used to represent sequences of numbers, including whole numbers and multiples of a variety of numbers. Available as an app for the iPad or as an online web app.
Number Rack App Compose and decompose numbers using rows of movable, colored beads. iApp and online versions.
Posters
Did your child forget what the doubles plus one facts are? Download the posters below as a reminder!
Addition Fact Strategies Posters & Subtraction Fact Strategy Posters 8 1/2_ x 11_ posters (pdf) that describe and illustrate strategies such as: counting on, doubles, doubles/plus or minus one, make ten, etc. Contribution by a Bridges teacher.
Books
The link below will direct you to books that can be purchased at amazon. These were added with the intention of providing a list of appropriate books that they could check out from our local library. This link was chosen because you can preview the books and see what the cover looks like so it will be easier to find at the library.
Addition and Subtraction Books Visit the Math Learning Center Virtual Bookshelf for titles on addition and subtraction.
Games for Kids
Click on the name of the game, which is underlined. If you notice that any of the links are not working properly, please let your teacher know so it can be fixed. Since these are free games, they are often taken off of their websites without warning.
Deep Sea Duel Collect cards that add up to a specified sum. Choose how many cards, types of numbers, and level of strategy.
Flash Interactive Choose from 4 visual models to flash on the screen: base ten, five frame, ten frame, multiple ten frame. The timer begins with a view (flash) of 5 seconds. Type in the number represented. With every correct answer, the flash time decreases; with every incorrect answer, flash time increases.
Math Lines Race to pair numbers that add up to 10. Or select this version of Math Lines and choose your own target number.
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.
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.
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.
ICT Numberline Games Site features a variety of number line games.
*Adapted from Bridges in Mathematics, The Math Learning Center Salem, Oregon by Danielle Baumgart Chippewa Valley Schools, 2015
Deep Sea Duel Collect cards that add up to a specified sum. Choose how many cards, types of numbers, and level of strategy.
Flash Interactive Choose from 4 visual models to flash on the screen: base ten, five frame, ten frame, multiple ten frame. The timer begins with a view (flash) of 5 seconds. Type in the number represented. With every correct answer, the flash time decreases; with every incorrect answer, flash time increases.
Math Lines Race to pair numbers that add up to 10. Or select this version of Math Lines and choose your own target number.
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.
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.
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.
ICT Numberline Games Site features a variety of number line games.
*Adapted from Bridges in Mathematics, The Math Learning Center Salem, Oregon by Danielle Baumgart Chippewa Valley Schools, 2015