Show children different animal feet, talk about size and compare their feet to dinosaur feet and to other animal feet! pulls in the use of descriptive words, gives them a bit of measurement and also teaches them. Plus, dinosaurs get everyone interested!
Trees study- From: I'm a teacher, get me OUTSIDE here! Sorting sticks from longest to shortest. Good outdoor group activity for preschoolers that can be left for individual students to return to time and again.
Here's an activity where students use rice to compare the capacities of different containers. - Australian Curriculum - - Compare & order several shapes & objects based on length, area, volume & capacity using appropriate uniform informal units