February 24th, 2015
Objective: SWBAT........

This week, students continue Number Worlds, Level E, Addition. Students will explore the commutative and associative properties of addition (without formally being introduced to the terminology) as an addition strategy.

• Students can use various mental addition strategies to solve word problems.

3.NBT.2 Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.

Vocabulary:

• Addition
• Double Fact
• Near Double Fact
• Nice Numbers

Activity:  

• Warm-Up Example Word Problem Discussion
• Acting Out
• SWB pg 24-25

Debrief: 

• Exit Slip..... Real World Application! 

Homework:  Practice...Grouping Strategies: Lesson 4