Students will learn how to write and solve one-step equations from word problems. Here's an interesting word problem, from Gardner's *Entertaining Mathematical Puzzles:* If a basketball weighs \(10 \frac{1}{2}\) ounces plus half its own weight, how much does it weigh? The equation required to solve this problem is

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Next, give your students these challenges:

- 2018 Math Kangaroo Levels 5-6 Problem #21 by STEM4all
- Sorting Numbers by NRICH

Conclude by leading this investigation:

Divisibility Tricks

by MathPickle

6.EE.B.6: Use variables to represent numbers and write expressions when solving a real-world or mathematical problem; understand that a variable can represent an unknown number, or, depending on the purpose at hand, any number in a specified set.