# (Optional) Activity 2.2 - Activity 2.2: From Big to Small (30 min)

### Target Student Performance

Students organize images to “zoom in” and “zoom out” of six different systems at four different scales: atomic-molecular, microscopic, macroscopic, and large scales.

Students practice sorting pictures of items by their size on the macroscopic and atomic-molecular scales.

Accommodation: If you have a number of students with special needs in your class, it’s recommended to do this optional activity.

### Resources Provided

- 2.2 Powers of Ten Cards (1 per group)

### Recurring Resources

- Powers of Ten 11 x 17 Poster (1 per class)
- Powers of Ten with Pictures 11 x 17 Poster (1 per class)

### Setup

Print one copy of the Powers of Ten 11 x 17 Poster for each group. Print one copy of 2.2 Powers of Ten Cards for each group. Either cut the cards apart before class, or have the students cut the cards in their groups.

Notice students' successes and difficulties in placing images at the appropriate Powers of Ten benchmark scales.