Notes

Day 10- Teacher-Made Lesson

Warm Up

Choose to do a string that focuses on adding 3 digit numbers.

Ex. of adding 3 digit number string:
132 + 100
132 + 150
132 + 156
275 + 200
275 + 214

Launch

Point out to kids that when we do TPS during strings, you ALWAYS want them to be describing their strategy. Tell them that mathematicians not only talk about their strategies, they write about them too.

Choose a problem from today's string to model/we do - use the doc cam OR chart paper to DESCRIBE the strategy with the class. Emphasize that talking and writing about our strategies shows an even higher level of understanding.

Ex: 22 + 78

I started with the bigger number 78. I added the 2 ones from 22 to get to a landmark number 80. Then, I added on two leaps of ten which got me to a sum of 100.

*Emphasize smart strategy choice and letting the numbers speak to you. Pick a strategy that makes sense with the numbers in the equation and helps you to work smarter not harder.

Congress

If a final congress is also needed, highlight excellent explanations. The focus of today is describing your thinking in words.

Resources and activities

three problems write about your strategy