Modelling in Room 14 - May 24 2017
"Today we are going to work scientifically as we explore and test our ideas/thinking about solid, liquids and gas."
Broke done goal to explain what’s happening. What are the most important ideas?
Scientifically - the way we work
Plastic bag- what are we going to do with it? He filled it with air and told them “ there’s air (gas) in here, can you feel the air in there?” (get children to feel the bag)
Hot water and plastic bottle experiment:
Energy in hot water is going to get transferred into the bottle.
Modelled with children, stand up in a group and he got them to move and spread as he ‘heated’ them up. This is the air particles getting more energy.
If we give something more energy, we make it bigger.
Plastic bottle with a balloon on top. Place the bottle in boiling hot water - balloon blows up as the air tries to escape. As it cools down, it loses some of it’s energy.
Pouring hot water into a bottle, then tip out, then put balloon on top - it will suck in.
Rocket Experiment:
Does it feel smooth? All of these people tested it. It is smooth. Talked about property of materials (would write these down to use as vocab later on).
-made up of matter (plastic, card, paper, paint)
- What’s inside? Air
“Air is all around us, it gets into everything”
Put plastic bag over rocket. “What is going to happen?”
If I pull it a certain way (towards me) the plastic bag gets sucked inside the rocket. If I push the rocket, the bag will fly off.
Today we are going to use some “stuff” to blow up some balloons.
Experiment:
Balloon
Baking soda, flour, citric acid
water
Bottle
Drew diagram. We are going to put the white powder in the balloon and we are going to put the balloon on the bottle and when the powder and water mix, they will have a chemical reaction.
It will create a new gas.
Can you help me figure out what powders will help get the right reaction. We are going to work scientifically to figure it out.
Hands on activity for children:
Equipment:
- Children in buddies
- They label the little cups with a, b, c
- Fill the larger cup half way with water.
- Use the eye dropper, practise one drop on the back of your hand.
- Put three different powders in the different little containers
- Take a little sample of power from each container and put it on the pallet
- Put a drop of water in each powder and see which one reacts.
Bring kids back to the mat and talk about which one reacts
Then tell them to mix the powder in the same amounts to see if you get a better reaction when you have two powders mixed together.
Decided on using a and b powder. They place this into a balloon and then place balloon on top of bottle that has water in it.
Observe what happens.
Bring children together on the mat and let them discuss the experiment.
Conclude lesson by telling children about how baking soda and citric acid mixed together creates a reaction (gas). This meant the balloon inflated.
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