We've been looking closely at measurement and why we need to use a standard unit of measurement to be able to compare our measurements with others.
Yesterday when we used our hands we discovered that we couldn't compare the measurements because they were all so different even though we were very careful with the way we measured and we were all measuring the same thing. We added our hand measurements to the Google form (on the left). It then graphed the answers for us.
Look at how different the measurements were ...
Today we created our own rulers and re-measured the items we measured with our hands yesterday using rulers we had created. We used strings of cm wide squares, we created a ruler that was 50cm long because it had 50 squares on it.
Here are some photos of our rulers in construction and of us measuring the same things we did yesterday...
Watch this space for our next analysis of our measurements.
