Our January Kiwi Crate unit was all about ice!
There are so many ideas and activities included in these crates that we don’t ever get around to doing them all.
We usually start by doing the 2 or 3 activities that have supplies included in the kit.
First up was an activity using salt and food coloring to make colorful icy-looking snow-crystals.
They turned out pretty cute.
Next was a sink or float experiment.
We set some little mini figure guys into a few of the slots in the flexible green ice cube tray that was included and then filled all of the slots with water. Then we froze it…
A few days later, we filled two cups with water…one with cold water and one with hot water.
And we put a frozen fishy toy in each one.
(Hot water on the left, cold water on the right.)
And we watched to see which one would melt first. The boys predicted the hot water fish cube would melt first, of course.
and they were right!
Then we got carried away going through some of the extension activities in the little booklet.
We learned a lot about the ways in which salt and ice react together.
First up was a little experiment called salt tunnels…
We sprinkled salt over the ice and then dripped food coloring over it.
The salt makes the ice melt more quickly, so those spots formed little tunnels in the ice, which were made visible with the food coloring.
Next up was seeing how the salt makes the ice stick to things…
Then we did a sink or float experiment where we placed a two pieces of carrot into two different cups…one with fresh water and one with salt water. The carrot floated in the salt water, but it sunk in the fresh water.
The next experiment took it a step further and showed how fresh water can even float in salt water.
We put ice cubes into both cups…the salty one and the fresh one. After a minute of letting the ice melt we added food coloring to both.
The red melted ice water stayed on top of the salt water cup, but filled up the entire fresh water cup.
We had a fun time learning about ice!