Requirement 6 for the Webelos Forester activity badge is
Make a poster showing a tree’s growth rings or examine the growth rings of a tree stump. Explain how the rings tell its life history.
When I did this with DS’s den, I made a requirement aid to help them with this. Use the link below to download and print it. It shows a sample diagram of tree rings to help them make the poster. We looked at an actual stump also, but the tree rings on the stump we examined weren’t well defined, so this helped them understand the concept.
Download a printable copy of Tree Ring Worksheet