December 8th, 2015

This week, students begin Number Worlds, Level E, Addition. Students will explore different strategies for adding one- and two-digit numbers and gain facility with mental addition.

• Use doubles facts and near-doubles facts to find sums.

• Use nice numbers to find sums.

• Find missing addends using mental computation.

• Use +10 combinations to solve problems mentally.

Objective: SWBAT......

Students can use doubles and near-doubles facts to find the sums of small numbers.

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:

• Sum

Activity:

• Finish Unit 2 Pre- Assessment
• Doubles in the Neighborhood
• SWB pg. 5-7

Debrief:

• Mental Math

Homework:  U2W1L1 Mental Addition Lesson 1