Collecting and Analyzing Measuring Data using Google Apps

posted Oct 17, 2018, 5:45 PM by Patrick Johnson   [ updated Oct 17, 2018, 5:51 PM ]
Students have been learning to estimate and measure in centimetres.

First we discussed the width of a finger is about 1 cm and is a good way to estimate the length of an object in centimetres.

Next we reviewed how to use a ruler (starting at 0 and measuring to the nearest cm).

Then students were tasked to estimate and measure 3 objects from the classroom with a ruler. They were also asked to identify whether their estimate was: too short, too long or just right.

When done, students entered in their data on an iPad using Google Forms:

Consolidating the lesson: When done, we examined the data that was collected. 

First we looked at students' estimates. 

From this pie chart, we concluded that when estimating with centimetres, our estimation was most likely to be too short. We compared this to the same activity that was done the day before where students used snap cubes instead of rulers. When using snap cubes, their estimations were much more like to be just right. Also, their estimation was equally like to be too short or too long

Students suggested that centimetres were harder to estimate because they were smaller than snap cubes and they were less familiar with them.

Finally we looked at the objects that were measured. The data was summarized in Google Sheets:

We used Google Sheets to order the objects from smallest to greatest. We discussed that centimetres are best used to measure smaller objects as it becomes tedious to measure larger objects with a 30 cm ruler. Also, that students estimations were most accurate when the object was 10cm or less.