Embedded Files
Unit 2 Overview:
Unit 2 Overview:
In this unit, the children will use counting strategies to add and subtract within 20. The children will learn how to “add to” and “put together” numbers for addition. They will learn how to “take apart” and “take from” numbers for subtraction. Students will understand that the equal sign means that quantities on both sides of the equal side are the same.
- Students will use objects, drawings, and equations to model and solve real world addition and subtraction story structures for all result and total unknown with sums and differences within 20. (1.OA.A.1)
- Students will use addition and subtraction counting strategies (plus/minus 0, 1, 2) with sums and differences within 20 to develop fluency within 10 and show the relationship between addition and subtractions equations. (1.OA.C.5, 1.OA.C.6)
- Students will understand the meaning of the equal sign with equations involving the same operation, using concrete models, recording their representations with drawings to determine if addition and subtraction equations are true or false. For example, 6 = 6, 7 = 8 - 1, 5 + 2 = 2 + 5, 4 + 1 = 5 + 2. (1.OA.D.7)
Home Activities
Home Activities
- Counting on and counting back are great strategies to practice addition and subtraction. Consider using a part part whole as a tool.
- Have your child count a set of objects less than 12. Give your child 1-4 more objects. Have the child count on from the previous number to find out how many objects there are in all.
- Have your child count a set of objects less than 20. Take away 1-4 objects from set. Have your child count back from the original number to find how many objects are left.
- Draw a equal sign symbol on a piece of paper. Give your child an even number of objects. Have your child place the same number of objects on both sides of the equal sign.
- Have children play a game against one another and keep score. At the end, compare the scores - determining if the amounts are equal or not.
Resources
Resources
Websites/Videos/Games
Websites/Videos/Games
- Marble Math Addition Practice (Website)- Students use marbles to practice add.
- Balancing Equations Practice- Helps students understand the meaning of the equal sign (Website) .
Other Resources - APPS
Other Resources - APPS
Deep Sea Duel (Apple)
Okta challenges you to a duel! Collect cards with a specified sum, and you win! But you better do it before Okta does! Choose how many cards (9 or 16), what types of numbers (whole numbers or decimals), and Okta’s level of strategy (easy to hard).
iTooch Elementary (Apple)
With more than 18,000 exercises, iTooch Elementary is a new and fun way of practicing and learning Math, Language Arts and Science for 1st, 2nd, 3rd, 4th or 5th Graders.
Math Slide Addition (Apple)
Math Slide is a multiplayer game helping children understand tens and ones; numbers up to 100. Players learn by sliding tiles into the center to match an answer, equation or image. The player who slides their tiles first wins.
Addimals (Apple)
Teaches effective math strategies and scaffolds learning to promote conceptual understanding and fact fluency.
Thinking Blocks: Addition (Apple)
Thinking Blocks Addition teaches children how to model and solve word problems involving addition and subtraction. In this interactive tutorial, children are introduced to 6 problem solving models.
Add/Subtract for Kids (Android)
Learning Math has never been this fun! This innovative math app is for parents whose kids are in the first or second grade or in the age group 3 - 6. With this educational app, kids can learn addition and subtraction underwater with fishes. Small kids can easily practice their math skills - addition and subtraction - with this fun game. Children can master Math skills in an interesting and entertaining set up.
Sunny Math Lite (Android)
Math is funny! How could it be? Try this app and you'll know that math can be interesting, too.
Sunny math has several casual math games which test your mental math and exercise your brain. They are not hard. They are just game.
Math Words
Math Words
These are vocabulary words that students will be exposed to throughout the unit.
- add
- addition
- combine
- compose
- decompose
- difference
- equal
- equation
- equal sign
- minus
- missing part
- model
- number sentence
- part
- plus
- represent
- separate
- solve
- subtract
- subtraction
- sum
- take apart
- total
- unknown
- whole
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