Materials List:
– Balance scale
– Un-popped popcorn kernels
– Popped popcorn kernels
– Small bowl or container for holding the popcorn

Preschool Learning Objectives:
1. Develop an understanding of weight and measurement by comparing the weight of popped and un-popped popcorn kernels.
2. Strengthen counting skills by counting out equal amounts of popcorn kernels for each side of the balance scale.
3. Encourage critical thinking and problem-solving skills by determining the amount of popped popcorn needed to balance the scale.

Preschool Teacher Instructions:
1. Begin the activity by introducing the balance scale to the children and showing them how it works. Explain that a balance scale helps us determine which object is heavier or lighter by comparing their weights.
2. Have the children count out and add 10 un-popped popcorn kernels to one side of the balance scale and 10 popped popcorn kernels to the other side. Ask the children to observe and discuss if there is a difference in weight between the two sides. Encourage them to use descriptive words like “heavier” or “lighter” to describe their observations.
3. Challenge the children to determine how many more popped popcorn kernels need to be added to the balance scale to make both sides equal in weight. Encourage them to problem solve and think critically about how to achieve balance.
4. Provide support and guidance as needed, offering prompts and questions to help children think through the process. For example, “Do you think adding more popped kernels will make the scale balance? Let’s try it out and see.”
5. Encourage children to experiment with different amounts of popped popcorn kernels until they find the right balance. Celebrate their success as they discover the correct number needed to balance the scale.
6. Conclude the activity by discussing their findings and reinforcing the concept of weight and measurement. Encourage children to reflect on their experience and share their thoughts on what they learned from the activity.