Students will discover properties of solving equations through this interactive lesson. Using this note sheet as a guide (and borrowing a balance from a science teacher!), students will explore rules of equality and will determine how many candies are in a mystery bag. This is a hands-on solving equations activity, reinforced pictorially and symbolically.
Before the lesson, obtain small plastic baggies and candies. For each example, the bag(s) must be pre-packaged to hold the number of candies that "b" will represent.
Example: If the equation is b+4=6, place 2 candies in the baggie for that example. Students will set up that bag and 4 candies on one side of the balance, and 6 candies on the other. Through prompts, students will take one candy off of each side of the balance at a time until 2 candies balance with the bag on the other side, showing that there must be 2 candies in the bag.