We are blessed to live in one of the mildest regions of our country and now in the middle of February we have signs of spring everywhere! The robins have returned, the crocuses and daffodils are triumphantly raising their green fists to the sky, and the pussy willows are peeping out on the trees.
In co-op we are finishing our section on Australia with a science lesson about air and some of it’s properties. Ms J presented a variety of experiments and the children were enthralled by all the demonstrations.
First we learned that air can have force: in this experiment she filled a glass half full with water than put a lid on and inverted the glass. The air created a vacuum keeping the water in the glass and holding the lid on.
Then to further demonstrate this force, she gave the kids juice boxes to drink and had them practise blowing air in and out after they finished to see how the air could change the shape of the box.
Next Ms. J demonstrated that air reacts to temperature: first the children crushed some ice and then put it into an empty plastic bottle. Ms. J put on the lid and shook the ice around and then asked the kids to make observations. After some random suggestions they noticed indentations in the bottle and we talked about how the lower temperature of the ice was causing the air inside the bottle to contract or shrink and was pulling the plastic in with it as a result.
Following the demonstration of the effects of cold temperature on the air, Ms. J asked the kids to hypothesize how heat would affect the air in the bottle. She ran hot water over the outside of the bottle and the children were able to see the sides bulge out as the air expanded.
The next two demonstrations showed how air also contains gases and those gases interact with other forces in interesting ways. First we saw two tea-light candles covered by glasses of different sizes. The children discussed their ideas about what would happen and then observed as first the tea-light in the shorter glass went out followed a few seconds later by the other one in the taller glass. They learned that our air on earth is full of oxygen which we breathe and which is also fuel for fire. The kids discovered that the fire starved once it consumed all the O2 in the glass and that the glass with the larger volume allowed one fire to live longer than the other.
Next Ms. J placed a tea-light in a bowl with baking soda in the bottom. She lit the candle then carefully poured vinegar around the candle onto the baking soda. The children watched the solution bubble and the flame go out then discussed what caused the fire to lose oxygen when it wasn’t covered by anything. They found out that the chemical reaction between the baking soda and vinegar created CO2 which also used up the oxygen and took away the fire’s source of that fuel.
The last experiment of the morning was a final example of the force that air can produce. The kids threaded a straw onto a string then taped the string between 2 chairs. Meanwhile, E was asked to blow up a balloon which we carefully taped to the straw while holding the opening closed. When E let go of the balloon it traveled the distance of the string with force and speed. The children were able to see how harnessing air can actually provide power and might have good environmental implications as a source of energy.
The balloon demo provided an excellent segue into an exploration of wind power and the use of windmills to create energy. Two kids volunteered to represent positive or negative ideas about wind energy. Then the rest of the children took cards from a basket with statements about wind energy. They discussed each statement then decided if it was a positive or negative and pinned it on the appropriate person.
Finally it was time for recess! The kids practised some windmill arms and ran into and away from the wind to explore the way that wind moved on their bodies.
This week in co-op our verse is:
Following co-op was our second last theatre camp and E has been working so hard on memorizing her lines and all the songs!
The rest of the week was a whirlwind of family visiting with an out-of-town uncle visiting and a few regular events at the end of the week such as piano and play-dates. We spent one exciting afternoon playing on a wharf with different children’s interactive displays and were able to drop in on a free juggling lesson with a local circus school!
E is gaining so much confidence with her reading and here she is practising her lines for Theatre Camp with her Oma.
We had some creative time with playdough. This is the world’s largest brownie with a surprise hidden inside!
As a new method to foster better sibling co-operation, my kids now experience time out as a moment to hold hands with their beloved sister or brother whenever they fight. The time-out ends as soon as they can forgive each other and move forward as friends. So far we are having some reasonable success. 🙂
To fill in our week we spent some time on patterning with Math iXL, reading some great books from the library and a science construction project with dad to try and build a rocket.
Wrapping it up with a bit more time outside! We love the sun! Here we are getting our upper body workout at the playground, Mom even got in on the action 🙂
E is trying to master roller blading whenever it’s dry and she is making great progress with her balance and control.
May the sun shine brightly on you today!