## Reflection: Coherence Powers of Ten: Review and Practice and Writing Clear Explanations - Section 2: A quick reviewof powers of 10 in multi-digit algorithms

The Educreations Video shows some interesting discussion and clearly demonstrates student's level of understanding. I thought the discussion about 5 x 10 and 10 x10x10x10x10 was invaluable. Their faces were intense and showed their thought process as we discussed a lot. I talked about everyday use of powers of 10, figuring out wrong answers, and explanations because I want them to appreciate learning how this skill sharpens their number sense.  Common Core emphasizes this in its design. Their questions and their realization in that short clip was so exciting.

Appreciation of Math Skills
Coherence: Appreciation of Math Skills

# Powers of Ten: Review and Practice and Writing Clear Explanations

Unit 13: Multiplication Unit
Lesson 12 of 19

## Big Idea: Students will review powers of ten and learn to write clearly about the process after they identify the wrong answers from three given algorithms.

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Standards:
Subject(s):
Math, Number Sense and Operations, powers of ten, multiplication of 10s
45 minutes

### Mary Ellen Kanthack

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