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# Measurement: Weight / mass.

1. Introduction.

Vocabulary: Light, heavy, heavier.

Structures: I think that the best unit for___ is the___. Do you agree? Yes, I do / No, I don't. Because...

I think that the___is about/weighs around___. Do you agree? Yes, I do. / No, I don't. Because...

How many ___ are there in___?

2. How to create a weighing scale.

Make groups of 5 and create a balance. Click the link and follow the steps.

http://www.wikihow.com/Make-a-Balance-Scale-for-Kids

3. Metric System. Multiples and submultiples. Equalities.

 Multiples. 1 t = 1000 kg.  1 kg = 1000 g.  1 hg = 100 g.  1 dag = 10 g. Submultiples. 1 g = 10 dg.  1 g= 100 cg.  1 g= 1000 mg. 1/2 kg= 500 g.  1/4 kg = 250 g 3/4 kg = 750 kg.

4. Exercises.

Click the button below "weight exercises".

You can start doing exercises: change units of measure and solving problems.

Problem solving.

1. Copy essential information (datum).

2. Question.

3. Calculations. (Addition, subtract, multiply, divide).

4. Result. Express the unit of measure.