Monday, February 18, 2013
3rd Grade Castles & Science: Simple Machine Pulley Drawbridge
Here is the latest update on our 3rd grade castles! My previous post on these told you how I had one class paint their castles...you can see from the photos below the different technique I had the other class use...sponges. I think I like this technique better than the first!
For our last class, we spent time making our draw bridges work. I supplied yarn, paper clips, hole punches, wooden dowels and toilet paper rolls, upon request. I did not demonstrate how to make these work to students. Instead, I told them they had to use their problem solving skills and what they learned in science class to make a pulley system for their drawbridge. While some of these aren't exactly true pulleys, I'd say they did a pretty good job! One class was particularly more creative than the other with their draw bridges and a lot of the boys actually made their bridges move with a crank!