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Partial Progress - Circles (browser only)
Shape and Data
Objectives
To use Venn diagrams to sort.
Resources
Large Paper | Range of plastic 2D shapes or 📄 2D shapes sheet | Pieces of card or paper
Vocabulary
Venn diagram | straight | curved | names of 2D shapes
Today's Lesson
What to Get Ready
For the Introduction, use two small pieces of paper to label one of the hoops ‘straight lines’ and the other ‘curved lines’.
For the Main Activity, prepare two sets of cards: one with colour names (for example, ‘red’, ‘green’, ‘blue’, ‘yellow’, based on the colour of shapes you have available) on them and another set with number of sides on them (3-8).
Prepare a piece of large paper with two overlapping circles drawn on it to form the basis of a Venn diagram (as shown below).
Introduction
Before you start the lesson, watch this Recap Video with your student.
Show your student the large piece of paper with two large circles drawn on. Place the 'straight line' label on the first circle and the 'curved lines' label on the second circle.
Explain: ‘We are going to use these two circles to sort capital letters into sets. We will put letters with curved lines in this circle and letters with straight lines in this circle. Do you think there will be more letters in this set or this set (pointing to the two labels on the hoops)?’
Write a capital ‘A’ on a piece of paper and ask, ‘Where should this letter go?’
Then ask: ‘What is the next letter in the alphabet?’
Discuss how the letter ‘B’ belongs in both sets because it has both straight and curved lines.
Show how we can place ‘B’ in the intersection (where the hoops overlap). Say: ‘It has curved and straight lines!’
Ask your student to write the next few letters of the alphabet in capitals on pieces of paper, and then to place them in the correct places in the Venn diagram.
[Your student might be interested to know that the Venn diagram was introduced by John Venn, b.1834 – d.1923, who was an English logician and philosopher.]
When they have placed their letters, ask them to check that they are all in the correct places.
Ask: ‘Which set has most letters? Which set has the least number of letters? How does this compare with what we thought?’
Main Activity
Move the letters and the labels off the two circles.
Your student should pick a colour card and number of sides card and place them at the top of each circle.
They should then choose shapes from an array of coloured 2-D shapes on the table to fit into their Venn diagram.