This nature walk is about Fibonacci. He discovered a number pattern that is famous in the math world because it is also found in nature. You've seen it everywhere. Like:

Petals on flowers, seed heads, pine cones, leaf arrangements, leaves per turn,  vegetables and fruit, like pineapple, snail shells and most famously- the Nautilus shell.

The pattern is that when you add any two consecutive numbers you get the next number in the sequence. Here's the number pattern: 1,1,2,3,5,8,13,21,34.......

When you add 2 and 3 you get the next number in the sequence, 5.

So, go looking for Fibonacci. Either draw or photograph what you find and make a Fibonacci lap book or scrap book or anthology or work of art.