Today students practise measuring and estimating in centimetres using a ruler. They also sorted and analyzed all of the data (measurements) collected by the class. First students measured an object, less than 30 cm, using a ruler. Students rounded their measurement to the nearest centimetre. Next, students used an iPad to load a webpage containing a Google Form. Google Forms are a way of inputting and collecting data (many organizations create online surveys using Google Forms). Students entered the name of the object and how many centimetres it measured. They also had the option to watch a 2 minute video about how to measure using a centimetre ruler. When students were done entering their data, they pressed SUBMIT on the Google Form. Students repeated this process 2 or 3 times. The measurements were collated in real time on a spreadsheet that was projected in the front of the classroom. As a class we measured 42 objects. During the consolidation part of our lesson, we gathered at the front to analyze the data we collected. Using the spreadsheet, we sorted the information from smallest measurement to the largest measurement. We discussed the smallest and largest objects measured as well as objects that were of similar length. Then, students were asked to find the mode of the date (the number that occurred most often). We discovered the mode of the data was 10 cm, 13 cm and 21 cm. Finally, we displayed the data in a graph which was an interesting way of comparing different lengths of measurement (the bar at the end is a piece of data that didn't get sorted). |