Course Guide - USAID Teacher Education Project

How many pets does each icon stand for? What does the half-image imply? Howmany respondents might there have been? Might there have been respondents whohad more than one pet? Does the size of one pet's image as compared to the othershelp or confuse the data? These are all essential information handling issues thatyoungsters need to have help decoding.c) As mentioned in the past session, bar graphs can be developed with the barsarranged either vertically or horizontally. Youngsters need to see both formats.d) Line plots are a simple way of displaying data, but not regularly used in themedia. Hence there are limited models for teachers to bring to class for students tointerpret.However, because of its simplicity of display and it ability to show trends, line plotsare important in the early grades, since they can be used to create bar graphs and theyare a way to visualize measures of central tendency, the focus of next week's sessions.3. What is essential to know or do in class?a) Introduce tally charts, pictographs, bar graphs, and line plots as a way to displaydiscrete data.b) Have students read, discuss, and analyse samples of these types of graphs.c) Have students construct a line plot.d) Discuss the shape of the data as displayed in various graphs.e) Discuss both the questions that graphs can answer but also the questions theymight raise.