Here’s a free word search on the names of different types of trees. You could download and print each by clicking on the images and then carry it to your next backpacking adventure to the woods. As you get tired after a long walk, you can sit under a tree to refresh yourself while searching for the hidden words.
Teachers explaining to their students the chapter on trees can also distribute these puzzles among them to help them get an idea of the topic in a fun way. There’s also word search replicating a tree’s shape, that your kids would for sure enjoy solving.