Introduce the lesson: Explain that today we will learn how to see if a problem is small, medium, or big. Use simple language to ensure the 1st graders understand the concepts.

Discuss everyday examples of problems. Ask students about times they experienced small problems (like losing a pencil), medium problems, and bigger problems. Use the Interactive Problem Size Cards to show visual examples.

This slide guides the interactive activity. Explain that students will use picture cards to match different scenarios with problem sizes. Encourage discussion and ask 'Why do you think this problem is small/medium/big?'

Review what was learned and reinforce how understanding problem sizes can help choose the right solution. Ask if anyone wants to share how they might handle a big problem differently than a small one.

Wrap up the lesson by reinforcing the key message. Remind students that it's okay to have problems and that identifying the size helps us know what to do.