26. Weight Talk About Instruments to Use When Weighing


1. Have a look at the items in your school bag and on your table and decide how heavy each item would be. Estimate which of these items would be closest to10g, 100g, 500g or 1kg.


a) Make a list of these items with the corresponding estimate beside each. b) Which item do you think is the heaviest and which is the lightest? c) How would you weigh each item to check your estimate?


2. a) Can you identify the following instruments used for weighing objects? b) Give an example of where you might fi nd each instrument.


c) Name 2 items you would weigh using each of the above instruments.


Remember: 1000 grams (g) = 1 kilogram (kg) 1 gram = 0.001 kilogram = 1


3. Estimate which item is heavier. a) A basketball or a balloon b) A ceramic cup or a tin cup c) A wooden box or an iron box of the same size d) A kilogram of coal or a kilogram of feathers e) A bag of air or a bag of water f) What instrument would you use to weigh each of these items?


Strand: Measures 182


Curriculum Objectives: Select and use appropriate instruments of measurement; estimate and measure weight using appropriate metric units.


____ 1000kg


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