Collecting and representing data Mathematics Strand: Statistics & Probability

 FOCUS QUESTION

In what ways can I represent and interpret information?

SPECIFIC OBJS.

1. Discuss appropriate uses of various tables and graphs.

2. Collect data using direct  observation, experiments, interviews and questionnaires

CONTENT SUMMARY

A graph is a mathematical diagram which shows the relationship between two or more sets of numbers or measurements. A pie chart a circle graph is a type of graph in which a circle is divided into sectors that each represents a portion of the whole.

ENGAGE

Students I want you to quickly unscramble the word below.

                                                HPGAR

Can you give the meaning of this word?

How many types do you know about?

EXPLORE

Let us watch this youtube video clip on  (Types of Graph) to glean information on the different types there are and when to use them.

Video clip: Types of graphs

Discuss how data presented on graphs are collected.

Method 1

Observation

Method 2

Questionnaire

Method 3

Interview

Discuss which graph could be easily used to collect information on how students get to school.

(Tally Chart could be used) Let us look at the one below.

Write some sentences about the information  presented.

EXPLAIN

Name what the different types of graph are and tell when they are most appropriate to use.

EXTEND/ELABORATE

Examine the Bar Graph and Histogram closely, and name the feature of the graphs. Students will examine the titles, labels, intervals, bars and axes. 

Video :A simple Bar Graph and its features.

Video: How to construct a simple bar graph

EVALUATE

1. Which of the following is not a data collecting method?

(a) questionnaire

(b) survey

(c) pie chart

(d) interview

2.What features should be included on a Bar Graph?

3. Use the graph below to answer the questions that follow.

3. (a) Use the Tally Chart below  to create a simple Bar Graph.

    (b) Which statements are true about the Tally Chart? Circle the bubbles with the correct information.

           

More children get to school by walking than by bus.	O
The most popular mode of transportation is bus	O
The least used mode of transportation is bike	O
Twenty six students were surveyed.	O