Here are some more ideas to get you started.
Engage the fives senses (whenever possible)
Make leaf prints ( paint the leaf and press the print into the journal)
Make leaf rubbings
Trace the items they are looking at
Add leaves into the journal using tape
Count the birds/squirrels/insects etc.
Measure as much of the phenomena as the students can using non standard and standard units of measurement.
Here is a downloadable lesson from John (Jack) Muir Laws and Emilie Lygren book: How to Teach Nature Journaling. All resources shared with permission. "I Notice..., I Wonder...?, It Reminds me of..."
GIVING FEEDBACK here is a fantastic resource from Jack and Emilie
NOTE: You are encourage to spend time in the outdoors Nature Journaling. However, you can also bring nature inside, look out your wonder window, have a refrigerator Safari or even observe a house plant or pet.
Make a list on a piece of paper of all the machines you see in movement
With some help, write beside each item to describe how they make human life better
For example, wheels on a skateboard turn to allow a person to ride down the sidewalk
Use an object, toy or item from your collection and create an alternative way to move them. Use pulleys , ramps, wheel and axles, lever, gear or wedge that you create from materials you have at home.
NOTE: This can be used with the Nature Journaling activity at the top of the page.