8.NS.A.2

The Cursed Library

Experience Awakening - Our open-world educational game

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Game Info for Teachers

COMBINED RATING

3.6 Stars

TEACHERS (17)

4.1

STUDENTS (1233)

3.1

LENGTH

25 Minutes

GRADES

CAPABILITIES

iPad Support

Spanish Language Support

Text-to-Speech Support

Saves Progress

Description

Play as Olivia, the library keeper who, every night, has to clean up the mess left behind by the creatures inhabiting the place - watch out for them as you go! Understanding how to compare irrational numbers using approximations will serve you well here!

Vocabulary Words

rational numbers

repeating decimals

integers

fractions

irrational numbers

Instructions

Play through this interactive game to learn about Compare Irrational Numbers Using Approximations. Suitable for Grade 6, Grade 7, Grade 8.

Main Concepts

All numbers (including fractions, percents, square roots) can be expressed as a decimal.

An irrational number cannot be expressed as a ratio between two numbers and it cannot be written as a simple fraction because there is not a finite number of numbers when written as a decimal. Instead, the numbers in the decimal would go on forever, without repeating.

A rational number is any number that can be represented as a/b where a and b are integers and b≠0.

Know that a fraction that is repeating can be converted to a fraction and fraction can be expressed as a repeating decimal.

Decimal expansion repeats eventually.

Approximate locations of irrational numbers on the number line by rounding to a desired place value and placing between known locations.

Discussion Questions

Before the Game

What is a rational number? Can rational numbers be negative? List examples of each type of number: rational numbers, fractions, repeating decimals and irrational numbers? Choose any two types of numbers and explain how they are similar and how they are different?

After the Game

When ordering the books from least to greatest, how did you use the denominator of the fractions to help you? What is a repeating decimal? What strategies did you use when ordering the fractions and decimals together? What symbol do we use to denote a portion of the decimal that is repeating? How did the game help you to compare fractions to determine which is the greatest or least? Without using a calculator, how do you know that π/2 was greater than π/3?

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Game Details

Difficulty

Content Integration

Lexile Level

905

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