Lesson 3: Determine the unknown number
https://www.mathcoachscorner.com/2024/08/solving-problems-with-the-unknown-in-any-position/?utm.com
Why this is useful:
Explains how knowing the relationship between addition and subtraction helps when the unknown is not just at the end. It also illustrates how to use manipulatives or diagrams to solve for unknowns. It also suggests using word problems or stories to frame the unknown in a relatable way.
What to do:
Read the article
Pull on some examples to use with your child
Ask your child to provide real-world stories about the equation
With other examples, you can ask your child to explain their reasoning
If they struggle, help them with a manipulative or drawing: “Let’s build it with blocks and see how many are missing.”