Stepping outside these days is a feast for the eyes. The changing leaves make every outdoor trip magical! There is science behind those vibrant colors, and we’ve got an easy STEAM project you can do at home with your little learners to explore where the red, yellow, and orange in autumn leaves come from!
As always, we encourage you to get into the STEAM spirit with a good book. This month’s recommendation is A Very Big Fall, by Emmy Kastner.
In this heartwarming story, three adorable leaf friends – Birch, Oak, and Maple – find themselves changing color and then discover that they are going to fall to the ground. As they face this big change, they learn that the ground might not be the end, but a new beginning.
After reading, it’s time to learn why Birch, Oak, and Maple change color! A chemical called chlorophyll gives leaves their green color. The green is so strong that it overshadows the other colors in the leaves. In the fall, chlorophyll breaks down, and the other colors shine through.
This month’s STEAM experiment will replicate this process. Before getting started, gather the following materials:
- 3 green leaves from the same tree
- Rubbing alcohol
- 1 glass jar
- Plastic wrap
- Paper Strip from a coffee filter
- Small bowl with hot water in it
Now you’re ready to let those colors show! Click below for instructions!
Click here to download the full Changing Leaves STEAM activity from sciencefun.org.
As always, be as creative as you want, and have lots of fun learning together!


