Revision of probability

• Mathematics
• Lower Secondary (Key Stage 3)

Revision of probability and tree diagrams

Learning objectives:

• Calculate simple probability as a fraction or decimal
• Describe a probability 
• Draw a probability on a probability scale
• Use a tree diagram to represent the probability of 2 events happening

Take some counters (red and yellow). Upload a photo of them below. What is the probability you will pick a yellow counter?

Complete task 1 on task sheet and upload a photo of answers here.

Probability of more than one event

Tree diagrams

I have 7 yellow counters and 3 red. You have 2 yellow counters and 8 red. What is the probability of us both picking yellow counters?

Complete task sheets on tree diagrams and upload here.

Tell me one thing you have learned about probability today.