Tree passport

Children adopt a tree on the school grounds, measure its dimensions, and compile its official passport.

Steps

1. Walk around the school campus: small groups adopt one specific tree.
2. Children measure the trunk circumference using string and estimate height using the pencil method.
3. They create bark rubbings using crayons on paper and collect a fallen leaf.
4. They identify the exact tree species using a field guide.
5. They compile a tree passport document and revisit their tree across different seasons.

Tip: Trunk circumference in centimeters divided by 2.5 provides a reasonable estimate of the tree's age.

Materials needed

• Children's tree field guide (1 copy)
• Wax crayons (1 pack per group)
• Measuring tape (1 per group)