Grades 4-6: CO2 and Climate Change

by | Feb 24, 2026

Trees help absorb CO2, the gas that causes global warming (pg. 26). Research how humans produce CO2. How can we cut down on the production of this gas and help fight climate change?

Grades 4-6: Trees in the Playground

by | Feb 24, 2026

Have you ever swung on the trees in your school playground? Does this book make you think twice about keeping the trees in your schoolyard safe? What can you do to make sure they grow big and strong?

Grades 4-6: Sick Trees

by | Feb 24, 2026

Have you ever seen a city tree that’s sick or diseased? What happened to it? What creatures lived in it before it fell down and died? Was it killed by invasive insects like the ones the author writes about in A Forest in the City? How do you know?

Grades 4-6: Lichen

by | Feb 24, 2026

On page 21 the author writes that scientists test lichen on city trees to monitor pollution. Watch this video https://www.youtube.com/watch?v=lh3xFOw62aU about why lichen is important. What did you learn about the value of lichen to us and the environment?