Missing Number Equations

Recommended Grade: 3

Curriculum Expectations (strand): Patterning and Algebra

* demonstrate an understanding of equality between pairs of expressions, using addition and subtraction of one- and two-digit numbers.

Learning Goal:

We are learning to demonstrate an understanding of equality between pairs of expressions, using addition and subtraction of one- and two-digit numbers so that we can find the missing number in an equation.

Required Supplies:

2 Dashes
2 iPads with Blockly app
Chart paper with equations

Instructions or Directions:

1. Place chart paper up on the wall.

2. Have students connect their Dashes in the Blockly app.

3. 1 student is Column A and the other is Column B.

4. Students code their Dashes to try and make them go the same distance.

5. Students will know that the equations are balanced if both Dashes end up at the same spot.

Reflection Questions:

How do you know that the equations are balanced?

What strategy did you use?

How could you tell that your answer was right?

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