In Mangahigh's Sigma Prime game, kids use multiplication and division with prime numbers and factorization to defeat aliens. Each alien displays a number, and kids must shoot prime number missiles at the alien, reducing its number value down to 1. Kids can earn points and medals for successfully destroying aliens.
This is an engaging way for kids to practice these skills, but be aware that the game controls are a bit tricky. Kids who have better coordination could have a great advantage over those who are just as skilled at the math but not as coordinated. Therefore, the game is best suited as one way, among many, for kids to work with prime factorization. Make sure kids have plenty of time to get the hang of the controls before taking any stock in their scores. After kids play, have them discuss their strategies as a class. What helped them earn the most points? How do different factorization concepts help them play the game?Continue reading Show less
Key Standards Supported
Operations And Algebraic Thinking
Find all factor pairs for a whole number in the range 1–100. Recognize that a whole number is a multiple of each of its factors. Determine whether a given whole number in the range 1–100 is a multiple of a given one-digit number. Determine whether a given whole number in the range 1–100 is prime or composite.
The Number System
Find the greatest common factor of two whole numbers less than or equal to 100 and the least common multiple of two whole numbers less than or equal to 12. Use the distributive property to express a sum of two whole numbers 1–100 with a common factor as a multiple of a sum of two whole numbers with no common factor. For example, express 36 + 8 as 4 (9 + 2).
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