Science fun - Spring scale

This is a good introduction for children who have never used a weighing scale before. By building the scale themselves, children gather an understanding of the mechanics of the scale. They'll also be able to observe how objects that are the same size may not be the same weight.

What this activity will develop:
Science skills

What you'll need:Cereal boxScissors or knifeHookElastic bandFour paper clipsPlastic lidString

Setting up:
Make sure an adult supervises this game at all times.

What to do:

First, find a food item that has the weight marked on the package. Weigh it on the spring scale and mark the cereal box to show the level of the lid for that weight. To mark more weight levels on the scale, find objects that weigh one-half and one-quarter as much as the first object and mark the cereal box to show the level of the lid at these weights. Now you can weigh other items and use the markings to determine their weight. Gather several items that seem to be the same weight as the first. Place each on the lid and see how it compares to the known weight. Were certain items heavier or lighter than you predicted? Talk about how size and shape can alter your perception of an item's weight. Challenge a friend to find objects that are similar in weight to those marked.

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