The premier destination for fun science projects & experiments for kids grades K-8 since 2010!

Grade 4

  • Crack open a stone with the power of ice crystals

    Can you believe that even the tiniest trickle of water, when it freezes, can split open a large boulder and even cause large mountains to break apart? In this science experiment, make a 'stone' from a 'Papier-mâché' balloon filled...

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  • Test if marble is present in rock samples

    When unpolished marble is found in the rough, most people will confuse it with just any other metamorphic rock. Geologists often make use of various lab tests to test for the presence of specific substances in rocks. Similarly, in...

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  • Use the sun’s infra-red rays to cook a potato

    Infra-red rays from the sun can be used to cook food in a similar way to how a microwave oven cooks food. This is called cooking with 'solar energy' and we will study this in the following science...

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  • Make a rainbow with water and a mirror

    A 'spectrum' consists of the seven colours of the rainbow: red, orange, yellow, green, blue and violet – as well as two other invisible colours called: ultra-violet and infra-red. Isaac Newton used a 'prism' to split up white light...

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  • Use a chemical reaction to make caramel from sugar

    The key to making tasty 'Caramel' is by boiling white sugar slowly in steady increments to approximately 170C. As the sugar liquefies and draws near this temperature, the sugar breaks down into composites with the characteristic caramel colour and...

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  • Make raisins bounce up & down with this chemical reaction

    Objects with more weight or 'mass' per given volume is 'denser' than objects with less 'mass' per the same volume. Both the 'density' and the 'shape' of an object affect whether it will float or sink in water. Let's...

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  • Use some simple chemistry to electro-plate a nail

    A 'chemical reaction' in simple terms, is the breaking apart of substances to form new substances. Use some simple chemistry in the following science experiment to learn how electro-plating works.

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  • Use some simple chemistry to make your dull coins shine again

    A 'chemical reaction' in simple terms is the breaking apart of substances to form new substances. Use some simple chemistry in the following science experiment to make your dull looking coins shine again.

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  • Extinguish a candle by removing the heat with aluminium foil

    For a candle flame to stay lit, wax has to melt continuously and travel up the wick. When the flame's heat is removed and the wax is no longer melting, the flame will run out of fuel to burn,...

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  • Use chemical power to make a shooting volcano

    An erupting, lava-spewing volcano is one of the most magnificent sights in nature, but an active volcano can also be quite terrifying! The science experiment allow you to sample some of the magic of a volcano safely at home.

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