Make your step your scale

Material required:

1. Empty space to walk

2. A paper tape

3. Chalk/Marker

Process to do the activity: 

1. Find an empty space near your classroom, it could be a corridor or any other empty space. The only cond requirement is that you should be able to walk and take at least 20 steps comfortably.

2. Mark a starting point to begin your walk.

3. Measure 10 meters from this point. That will be the end point of the walk.
 

4. Walk the distance a couple of times, counting steps each time.

Is your step count always the same?

Make a Step Count table as shown below to record your data. Walk on the path 10 times. Count the number of steps you take each time and fill in the data in the table.

                    Table 1.4: Step Count

Has your step count been varying a lot?

Is there a range within which these numbers fall?

You have made an important finding - "The range".

The range helps you to predict that if you walk the distance 11^th time, the number of steps you will take to cover the same distance will be within the range.
 

Walk another 5 times on the path to test if your prediction was right or wrong.