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Science Ideas – Top five science experiments

Need a helping hand in science? We have come up with some ideas to help you in your classroom.
Have a look at our Primary Science series for more science ideas.

The Smartie Test

What you need:

What to do:

Separate Smarties into three bowls by colour. Add water and stir with pop stick. Add strip of blotting paper to each shallow bowl (one end in coloured water).

Result:

The pigments in the Smarties are absorbed and move up the blotting paper. The colours separate into one or more pigments.

Smarties

Taste Test

Taste test

What you need:

What to do:

Half fill four glasses with water and fill the fifth one with water for rinsing. Add vinegar to one glass, sugar to the next etc. Blindfold the children and have them poke out their tongues. Dab the cotton bud in each jar and place on their tongues. Children decide if it is sweet, salty or sour.

Volcanic Eruption

Volcano

What you need:

What to do:

Place two large tablespoons of baking soda into the bottle. Place the bottle in the dish. Colour the vinegar and then, using the funnel, pour it into the bottle.

Result:

Baking soda mixed with vinegar produces carbon dioxide. The mixture will be forced out of the bottle.

*Safety note: This experiment can be messy. Food colouring will stain clothes. Wear an apron!

Growing Grass Heads

Grass Head

What you need:

What to do:

Cut a 30 cm square of stocking. Place grass seed in the centre of the square and cover with a handful of sawdust. Pull corners of square together to create a tight ball around the seed and sawdust.

Fasten with an elastic band and decorate to make a head. Soak with water and place on glass with the stocking end hanging in water. Leave in sunny spot and replace water every second day.

Result:

Grass will grow through the stocking to give the appearance of a hairy head.

Water Transport

Carnation

What you need:

What to do:

Add a different-coloured dye to each glass of water, using the same amount. Place three of the carnations in separate glasses. Cut the stem of the fourth carnation in two down the middle. Stand each part of the stem into a different glass.

Results:

After a few hours, the flowers will be stained by the dye. A two-toned flower will also occur.