Reflection: Developing a Conceptual Understanding What's Under the Sheet? Part,Part, Total Within 10 and 20 - Section 3: Station Time


During this station time, the students are learning how two parts and a whole are related.  While students are working on these tasks, you want to circulate and notice how they approach the problems that come up in each task.

You want to notice who students figure out how many are hidden.  Are they guessing or are they using an approach?  What is their approach?  Are they counting on, using cubes, using a known fact, or using reasoning about groups of 5.  

You also want to know note if students understand that the amount shown and hidden always equal the total number.

  Observing Students Engaged With Station Activities
  Developing a Conceptual Understanding: Observing Students Engaged With Station Activities
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What's Under the Sheet? Part,Part, Total Within 10 and 20

Unit 11: The Number 10 and the Addition and Subtraction Concept
Lesson 5 of 17

Objective: SWBAT solve a problem in which the total and one part are known. SWBAT use relationships among different combinations of numbers up to 10.

Big Idea: Don't sweep it under the rug but rather hide it under the sheet. Today students will play a missing addend game called What's Under the Sheet.

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Math, 1st Grade Story Problems, complements of 10, missing addends
  70 minutes
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