Children love water play. So, today, we are making a lake using a baking tray filled with water on which your child can sail small boats made from walnut-halves.
What you will need:
- colorful cardstock to make sails,
- toothpicks or thin straws with a tip cut to a point,
- modeling clay,
- deep tray (we are using a large baking tray) filled with water and some blue coloring; we also added seashells and jell-water beads.
To make the boats, open walnut shells along the edges, being careful not to damage the half shell. Then show your child how to make a sail from a piece of sturdy cardstock cut to form a triangle. 💡TIP, a sail cannot be too wide, as it might get wet on the sides, weighing the boat down and making it sink.
Place modeling clay in the bottom of the half-shell and put the mast into it to hold it upright.💡 TIP: you need to place just a small amount of modeling clay/play-doh, just enough to hold the mast.
Will the sailboat sink or float? The answer is how heavy the half-shell is: if you put too much modeling clay/play-doh, then the boat will be too heavy, causing it to sink. Also, strong "wind" (like Adrian blowing – see a video below) might tip the boat over too.
A child can now launch the sailboats on a man-made lake and gently blow to create a breeze.
For more on science experiments: