One group made catapults and checked how far they could fling a marble. We used popsicle sticks, rubber bands and plastic spoons. Each group had building time, practice time, then three turns that were measured. We were able to make modifications in between our three turns, and we worked out the average distance of each group. It was lots of fun and we learnt some interesting things about measuring and comparing distances. Unfortunately Ms Udy was too busy helping and measuring to take any photos on that day! Here is a link to the kind of catapults we made:
https://littlebinsforlittlehands.com/popsicle-stick-catapult-kids-stem-activity/
Later in the week, another group made potions. We started with mixing vinegar and baking soda and learning about chemical reactions. We learnt a little bit about acids and bases and how they react with each other. We each got to make a reaction with some red food colouring so it looked like lava coming out of a volcano! Next, we mixed up water and food colouring, then added different amounts of sugar to each colour. When we stirred them really well, this made some colours more dense than others. We very carefully poured them on top of each other, or used the big droppers to stack the colours on top of each other.
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