What is subitising?
Subitising is the ability to instantly recognise the number of items in a small group without counting.
Children quickly learn to recognise the pattern of dots on a die. However it is important that they also recognise the number of objects in irregular groupings, including groups of mixed objects.
What’s in the package?
This package contains:
A set of 30 number cards, 5 of each number 1-6
A slide show displaying one number on each slide (30 slides) in random order
Print, cut out and laminate the cards. (Printing on A3 will provide larger cards.)
Introducing the activity
Explain to children that you are going to display cards showing a number of objects. They are to tell you how many objects are shown without counting.
Begin with cards showing 1 – 3 objects, and introduce higher numbers as children gain proficiency. Shuffle the cards to display in random order. (The numbers 1-6 are displayed in random order in the slide show so introduce it when the children are confident with all numbers.)
Introduce the activity to the whole class or group so that all students are supported.
When children are proficient, they could be asked individually to identify the number of objects shown on a card.
What to do
Display a number.
Ask children to tell how many objects are on the card.
Ask children to explain how they knew/what they saw e.g.
“I saw two butterflies up the top and two bees down the bottom. That’s four.”
“I saw three bees and two ladybeetles. That’s five.”
Note: Children may express different ways of identifying the same number.
I hope you and your students enjoy using these cute insect subitising cards.
They could also be used for number matching and snap card games.
Look for the next set with numbers 7 – 10!
Check out my blog at www.NorahColvin.com for more ideas and discussions about teaching and learning.
I would appreciate your comments and feedback.
Happy teaching and learning!
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