Mathematics 4

Lesson 4 - Comparing Probabilities

To encourage your child to have fun on the Web while learning about Comparing Probabilities, here are some games and interactive activities they can do on their own or in pairs.

Goal

Make predictions and experiment with spinners with unequal sections.

Builds Upon

Student Book pages 366-367

Instructions for Use

Probability lets your child experiment with probability by spinning a spinner.

To use Probability, start by selecting 'Preset Spinner'. Choose the number of spins - 1, 5, or 10. Click the 'Spin' button. A tally chart records the results of each spin. Press the 'Clear Tally' button to clear the results and start again.

To use 'Make Your own Spinner', select the 'New Spinner' button. To increase or decrease the colour sections, click the '+' or '-' buttons, or drag the black dots on the spinner. Choose the number of spins - 1, 5, or 10. Click the 'Spin' button. A tally chart records the results of each spin. Press the 'Clear Tally' button to clear the results and start again.

Adjustable Spinners lets your child experiment with probability by increasing or decreasing the coloured sections of a spinner.

To increase or decrease the colour sections, click the '+' or '-' buttons, or drag the black dots on the spinner. To change the size of the colour sections, adjust the slider bars, or input percentages into the text fields. When the number and size of the sections is established, input the number of spins in the text field and click the "spin' button. The results are tallied in the chart. Click the 'Show Results Frame' to view a pop-up window that displays the results in the form of a pie chart.

To clear all the experimental data, click the 'New Experiment' button and start again.