Videos to help Grade 1 students learn how to share and critique peer solution strategies for

Common Core Standards: 1.OA.1, 1.OA.3, 1.OA.4, 1.OA.6, 1.OA.5, 1.OA.7

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Lesson Plans and Worksheets for Grade 1

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More Lessons for Grade 1

Common Core For Grade 1

New York State Common Core Math Module 2, Grade 1, Lesson 21

Lesson 21 Exit Ticket

Meg thinks solving the following word problem using the take from ten strategy is the

best way to solve. Bill thinks that solving the problem using the count on strategy is a

better way. Solve both ways and explain which strategy you think is best.

Mike and Sally have 6 cats. They have 14 pets in all. How many pets do they have

that are not cats?

I think __________ strategy is best because _________________

Lesson 21 Homework

Olivia and Jake both solved the word problems.

Write the strategy used under their work.

Check their work. If incorrect, solve correctly.

If solved correctly, solve using a different strategy.

Mike ate 6 apples from the fruit bowl. If the fruit bowl had 13 apples, how many apples are left?

Rotate to landscape screen format on a mobile phone or small tablet to use the **Mathway** widget, a free math problem solver that **answers your questions with step-by-step explanations**.

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.