# Missing Numbers with Addition and Subtraction Lesson Plan: Operations and Algebraic Thinking

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This lesson accompanies the BrainPOP Jr. topic **Missing Numbers with Addition and Subtraction**, and supports the standard of determining the unknown whole number in an addition or subtraction equation relating to three whole numbers. Students demonstrate understanding through a variety of projects.

**Step 1: ACTIVATE PRIOR KNOWLEDGE**

Display this image of an egg crate missing some eggs:

**Step 2: BUILD KNOWLEDGE**

- Play the
**Missing Numbers with Addition and Subtraction movie**. - Click the pause button each time a question appears in Annie’s Notebook and discuss it as a class. Then play to see how Annie answers it.

**TIP**: The pause button turns red to remind you to pause.

**Step 3: APPLY and ASSESS**

Students take the **Easy Quiz** or **Hard Quiz**, demonstrating what they learned about the topic while applying essential literacy skills.

**Step 4: DEEPEN and EXTEND**

Students express what they learned about determining unknown numbers in addition or subtraction problems, while practicing **essential literacy skills** with one or more of the following activities. Differentiate by assigning ones that meet individual student or grade-level needs.

**Draw About It**: Draw a number line or hundred chart to solve a counting problem.**Activity**: Fill in number sentences by drawing the missing dots.**Talk About It**: Explain how you’d solve each pictured missing number sentence.**Write About It**: Describe two ways to solve a missing number problem.

**More to Explore **

**Addition and Subtraction Unit**: Continue to build understanding around addition and subtraction by exploring more BrainPOP Jr. topics.

**Teacher Support Resources**:

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