RSS Feed
TwitterWe know that the Earth rotates on its axis at a constant speed, so that in the last 24 hours, the sun has moved around the Earth. Make a sundial, to use this information to determine the time.
Spend the day by seeing your created sundial with your children and observe how the big Earth rotates on its axis on your little sundial. To get your first idea of preparation spot a flashlight on a replica globe. Turn the globe so that everyone can see how the sun shines in different parts of the Earth at different times. Slowly turn the world and show your children how the sun rises over the continent, its noon, the sun sets on the continent, while rise on the next continent.
Preparation
Give each child a plate of paper or plastic and a piece of clay. Teach them to a round disk with it on the plate.
Each child will cut on it a triangle of cardboard that is relatively stable. They are working hard to built this clay triangles. They also need to make a touch point with the smallest angle and the center of the disc. Right angle in the sand, but not all the way to the edge.
Marking of sundial
Now the fun begins when you began this on a sunny and dry day. Tell the child to place their sundial in a sunny place.Each hour will go to class and do the deep lines in the clay, where the shadow falls. It all started with a paper clip for each child per day if the attack side of the line.
Using a timer or alarm to alert you every time you walked past the hour. In addition, it is easier to mark each hour from 1 to 12.
Follow Up
You need couple of days to fulfill the project.Each day leave the project around 3pm.
Leave to stay sundial after then.From the next day, you need to watch the every hour that the sundial and how precisely it gives the reading.
Sundials are used depending on the type of clay can be baked, glaze, or dry. Each time you visit the sundial with your children, ask them to say the time by reading it. Ask them questions what happened if you move it in different place of your garden etc..
in winter, like now?"
No comments:
Post a Comment