Lesson Six: It All Adds Up
Ms. Davis and Seth, one of the older children in the group, combine the information from all five surveys on an eraser board in order to tally the final results. When the prospect of adding so many numbers seems overwhelming to Nigel and Caitlin, Ms. Davis suggests using base ten blocks to make the task easier. Alex, Seth, and Ashley demonstrate and explain the strategy of regrouping to add and subtract. While others are totaling the numbers from each survey item, Seth decides to put their results into graph form using a spreadsheet application on the computer. Ms. Davis, with Seth’s assistance, explains what a graph is and how to interpret various kinds of graphs by using the three graph examples Seth has made including a bar graph, line graph, and pie chart.
