A hands-on approach to xylem and phloem

If you teach science, or interact with students who have taken an elementary or middle school science course, there is a good chance they have taken part in a lab that demonstrates how colored water can change the color of a plant. Sometimes this lab is carried out with white carnations (a little pricey, but … Read more

Student-Led Cell Lessons

Middle school science is a time to build on the natural curiosity developed in elementary school while promoting science knowledge and expertise. It is part of our human nature to observe with awe and wonder the natural world around us. In middle school we get to foster that innate curiosity while pushing it to the … Read more

The Mechanics of the Lung Model

You probably noticed that pushing the large balloon in towards the smaller balloons caused the smaller balloons to deflate and flatten. Pulling it out caused the smaller balloons to inflate slightly. And, all of this occurred without ever blowing air into the straw… or so it seems! Before we get into the mechanics of the … Read more