Operation Ice Rescue
HQ says: three animals are frozen. Which rescue is fastest?
Everything you need to run it in 5 minutes tonight and 30 to 45 minutes tomorrow. Then switch to Agent view and hand it over.
Warm-up: Solid, Liquid!
“Freeze!” Stand stiff like ice. “Heat!” Melt into a puddle. Ice is solid. Water is liquid.
Guess! Which one wins?
Start all three: sun, warm water, warm hands
Watch! Who gets out first?In CAPS, solids, liquids and gases is a Grade 4 Natural Sciences and Technology topic. This is a hands-on head start.
Tonight
One toy in each cup. Fill all three to the same height. Freeze overnight. Most toys float, that's fine. Tomorrow, run the cups under the tap for a few seconds to slide the blocks out.Warm-up: Solid, Liquid!
A 1-minute game before you start. Shout “Freeze!” and they stand stiff like ice. Shout “Heat!” and they melt into a puddle. It plants the two words they'll use later: ice is solid, water is liquid.Running the rescue
- Ask for a guess first. It turns a melt into an experiment.
- Sun: one block on a sunny spot, on the towel.
- Warm water: they pour a little at a time from the jug.
- Hands: hold it 10 seconds, rest, then again. Cold hands are part of the lesson.
- Rangers (7 to 10): make it fair. Same cups, same water, same start second. They time each one.
Your phone is the field camera today
- Hand it over. They take the shot, not you.
- Show them: get low, right up to the ice.
- Tap once, hold still, count to two.
- First animal out, and the last.
With the Outside Quest kit, they print the photo on the spot, colour it in with their kokis and stick it in their Quest Book.The answers, so you can explain
Melting needs heat. Warm water usually wins, because it touches the ice all over and keeps passing heat in. Hands are warm too, but they only touch part of the ice and they cool down fast. The sun works slowly, unless it's a scorcher.
When ice melts it turns into water. Same stuff, different form: solid, then liquid.
Questions to ask: Was your guess right? Why do you think warm water won? What would happen in the fridge?
Other ways to play it
Read HQ's briefing (what your agent hears)
Agent. HQ here. We have a situation. Last night a cold front swept through your sector and froze three of our animals solid. Each one gets a different rescue: the sun, warm water, or your own warm hands. Before you start, make a guess. Which rescue will free its animal first? Then start all three at the same time, and watch closely. Snap proof of the first animal out, and the last. Then report to your grown-up: was your guess right, and why do you think it won? HQ is counting on you. Device down. Go.
