Cookie preferences

Faved uses cookies to enhance user experiences, to personalise content, and analyse our web traffic. By clicking "Accept all" you agree to the use of all cookies, including marketing cookies that may help us deliver personalised marketing content to users. By selecting "Accept necessary" only essential cookies, such as those needed for basic functionality and internal analytics, will be enabled.
For more details, please review our Cookie Policy.
Accept all
Accept necessary

Prime Numbers Challenge

em Numeracy

Descrição

This practice helps children understand the concept of prime numbers through a self-made card game.

Instruções passo a passo para outros professores

First explain the concept of prime numbers. In brief, prime number is a natural number which can be divided only with two numbers: 1 and itself (e.g. 2, 3, 5, 7, 11...)

Number 18 cards, pieces of paper, or bottle caps with the numbers 1 – 18. Mix them up and arrange them face
down in a grid – 6 cards per row, 3 cards per column.

Have one child turn over one card. Ask another child turn over
a second card - if they add them together, what is the sum? Is the sum a prime number?
• If yes, move the two cards to the side in a pair
• If not, turn them back over and continue to play the game

The game ends when you cannot find any more pairs that make a prime number.

Activity extension: Add subtraction! When the two cards are turned over, do they subtract to make a prime number?

Activity extension: Add multiplication! Multiply the two numbers to see whether they make a prime number. Why do most pairs or numbers not make a prime number when multiplied together?

Que tipo de resultados esperar?

Resultados

Children learn how to identify prime numbers. Working in a group teaches them collaboration, critical thinking and problem-solving together.
DAR FEEDBACK

Fave a prática para poder participar da discussão e comentar favorite_border Fave (favorito)