Science : “Photosynthesis”

14th December 2010

Science or Cooking??

Plants need to photosynthesis because this is how they make their own food, as they can’t eat like we do. They use sunlight energy, water and carbon dioxide to make glucose, which is a form of food.

In order to understand more about photosynthesis, not only bringing wok and sing the photosynthesis song to explained the concept, miss Dewi also conducted an experiment for the kids to do. Not only for JHC’s kids, but this time we have visitors!!

Yes, we have these little guests from Montessori School who joined us in this science activity. Although they are still in kindergarten, but they were very attentive with what is delivered.

Jasper could repeat what he has just learned & answer the question, so smart...!

For the experiment every kid had already prepare : 2 glass bottles, lime water, green leaves and straw.

1. Green Leaves

2. Two glass bottles

3. Label the bottles:

“With Leaves”

“Without Leaves”

4. Blow air on the first glass bottle using straw for 30 seconds to fill the     bottles with carbon dioxide and close the lid.

5. Take the other bottle and blow air for 10 seconds, Put some leaves in it and blow for 30 second then close the lid.

6. Place both bottles under the bright sun for 1 hour.

7. After one hour take both bottles inside to observe.

8. Put lime water into the bottle without leaves and shake it. See how the color of the lime water changes milky — This is caused by chemical reaction. Lime water which is a calcium hydroxide / clear solution react when mixed with carbon dioxide. Thus the mixture becomes calcium carbonate (milky color).

9. Take the botle with leaves and pour in the remainder of the lime water. Shake the bottle and you will see that the color are much clearer than on the other bottle. The reason is because the leaves are absorbing the carbon dioxide in the bottle.

And Hallelujah, GOD is good! We managed to teach the children from all ages the same material. Thank you to our little Montesori friends for visiting us at JHC. GBU all