CCGPS Unit 1:  Becoming Fluent With Addition and Subtraction to 100

Summary/Overview/Interactive Links:

In this first unit students focus on basic number relationships involving addition and subtraction with and without regrouping within 100. 

Math videos:  http://studyjams.scholastic.com/studyjams/jams/math/index.htm

Practice Math Vocabulary:
http://www.eduplace.com/kids/mthexp/content/egames/mathlingo_grade2.html

 Practice your basic facts:
Math Dojo-//streaming.discoveryeducation.com/braingames/iknowthat/Dojo/Dojo.cfm?Topic=singledigitadditionwithrenaming
Math Brain-http://www.funbrain.com/brain/MathBrain/MathBrain.html
That's a Fact-http://www.harcourtschool.com/activity/thats_a_fact/english_K_3.html
http://www.toytheater.com/addition-pull.php

Students will use Mental Math strategies such as doubles and near doubles as well as ways to make ten to add two or more numbers.

Watch the video for the doubles strategy:
http://app.discoveryeducation.com/core:player/view/assetGuid/22C7691A-2CDD-4457-827D-1DCED3714E79

Watch the video for ways to make 10:
 http://app.discoveryeducation.com/core:player/view/assetGuid/D3EC72BB-ACB0-4005-91B8-97A447D6C8C4

Practice making a ten for addition or subtraction:
http://illuminations.nctm.org/ActivityDetail.aspx?ID=75 

Practice using a number line to add or subtract:
http://www.harcourtschool.com/activity/numberline1_5_04/

Students will compare one and two digit numbers and will find the difference between those numbers. 

Students will be introduced to the inverse relation between addition and subtraction through the use of fact families.  Fact families will also be utilized to introduce missing values.

Practice finding missing values:
http://www.toytheater.com/secret-number.php

Students will practice solving addition and subtraction story problems  in ways that make sense to them. Then they  must write in words the strategies they used to  solve the math problem.

Practice solving story problems:
easy-http://illuminations.nctm.org/ActivityDetail.aspx?ID=198
advanced-http://illuminations.nctm.org/ActivityDetail.aspx?ID=218

Practice with buying candy with coins:
http://www.beaconlearningcenter.com/WebLessons/CoinsForCandy/money001.htm

Click:   IXL Math 
 -Type in your username and password     
  - Go to 2nd grade and work on your skills:
                 Addition and Subtraction (1and 2 digit addition and subtraction to 100).


Activities to try at home:

Age Adding: Look for opportunities to practice addition combinations such as doubles, near doubles, as well as ways to make 10. Have your child add the ages of everyone in your family and/or extended family, or create a list of friends and their ages. Encourage your child to point out doubles (i.e. 4+4), near doubles (i.e. 4+5) and combinations of 10 (i.e. 4+6 or 3+7).

Fact "Families": Pair up with a family member. Use your ages to create your own Fact "Family."
Example:
Bobby is 5 and Sally is 7.
Bobby & Sally’s Fact "Family"
5 + 7 = 12 12 – 7 = 5
7 + 5 = 12 12 – 5 = 7

Missing Values Game: Make or purchase addition and subtraction flash cards. Cut 3x5 cards in half and paperclip to the flashcard to cover up one of the addends. Have your child find the missing value.

Adding: Look for opportunities to practice addition combinations such as doubles, near doubles, as well as ways to make 10. Have your child add the ages of everyone in your family and/or extended family, or create a list of friends and their ages. Encourage your child to point out doubles (i.e. 4+4), near doubles (i.e. 4+5) and combinations of 10 (i.e. 4+6 or 3+7).

Fact "Families": Pair up with a family member. Use your ages to create your own Fact "Family."
Example:
Bobby is 5 and Sally is 7.
Bobby & Sally’s Fact "Family"
5 + 7 = 12 12 – 7 = 5
7 + 5 = 12 12 – 5 = 7

Missing Values Game: Make or purchase addition and subtraction flash cards. Cut 3x5 cards in half and paperclip to the flashcard to cover up one of the addends. Have your child find the missing value.