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Study how the positions of stars in the sky change

Suitable For

Grade 3



Time Required

 <1 Week



What’s it about?

The North Star, also called ‘Polaris’, has been one of mankind’s most favoured navigational tools in locating the direction of North. The constellations called the ‘Big Dipper’ and the ‘Little Dipper’, located in the northern sky are often used to find the north star.

The stars, including the ‘Big Dipper’ constellation, rotates around ‘Polaris’ daily as the earth turns around its own axis, and yearly as the earth revolves around the sun. Study this rotation of the stars with the following science experiment:

Topics covered

Big dipper, Little dipper, Polaris

What will I need?


Procedure (Method)

Unfortunately, this section is only available in the e-book version of the project.

How does it work?

Unfortunately, this section is only available in the e-book version of the project.

Similar to the chalk drawn ‘stars’ on the umbrella in this science experiment, when we view stars from the northern hemisphere of the earth, they also seem to rotate around the North Star. Observe how, every 6 hours, the Big Dipper rotates to the west another 90 degrees around the polestar. You can tell the approximate time using the Big Dipper once you get used to its location in the sky at different times of the year.

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