Introduction
Addition and Subtration Within 20
In Grade 2 Unit 1, children will complete the following lessons
- Represent Addition and Subtraction
- Relate addition and subtraction
- Make-a-Ten strategies
- relate unknown addends and subtraction
- teen totals
- odd and even numbers
- strategies using doubles
- equations, equation chains, and vertical form
- add three or four addents
- add to take from word problems
- add to take from problems- unknown in all positions
- put together/take apart problems
- special put together/take apart problems
- compare word problems
- more compare word problems
- mixed word problems
Task
Games:
http://www.mathplayground.com/number_bonds_10.html
http://www.coolmath-games.com/0-number-twins/addition-practice-10.html
http://www.iboard.co.uk/iwb/Ladybird-Spot-Totals-618
http://www.mathnook.com/math/lolant.html
http://www.maths-games.org/ladybird-doubles.html
Teacher Page
Helpful parent resources:
The following are a couple videos that teach the “Make 10.”
http://www.youtube.com/watch?v=izmlS8vfYHw