Mr. Bowen's Fifth Grade
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Everyday Math Unit 12: Probability, Ratios, and Rates

Under Construction 8-5-15
In this unit, students will complete several hands-on explorations to investigate chance events and rate of change.

Topics studied include:
  • Ratios
  • Prime factorization
  • Greatest common factor
  • Least common multiple
  • Probability (as fractions, decimals, percent)
  • Combinations and chance events (tree diagrams)
  • Rate of change (constructing and interpreting line graphs)
  • Unit rates (cost per unit item)

Download the Unit 12 Objectives to view samples of each objective studied in this unit.

Download the Unit 12 Family Letter for more information about this unit, including vocabulary definitions, new algorithms, at-home suggestions, and answers to selected study link questions. Scroll down the page to find games, skills practice, and video tutorials specific to this unit of study.

One of the most important skills students will need for fifth grade math is automatic recall of addition, subtraction, multiplication, and division facts. I strongly encourage all students to practice math facts at home for at least 5 minutes each night. Our class will be charting progress as we take Facts Master practice tests each week, with the goal of correctly answering all 300 problems in under 10 minutes. Use this online stopwatch to time yourself!

Downloads/Resources
  • Unit 12 Study Links
  • Unit 12 Vocabulary Cards
  • Let's Make a Deal Project
  • Scale Drawing Project

Mr. Bowen's Tutorials
  • Unit 12 Review (comprehensive, not Mr. Bowen)
  • Prime Factorization
  • Greatest Common Factor
  • Least Common Multiple
  • Combinations and Chance Events 1
  • Combinations and Chance Events 2
  • Probability Introduction
  • Unit Rates
  • Ratios
  • Rates Introduction

Games and Interactives


Ratios
  • Ratios Matching
  • Ratio Rumble
  • Ratio Stadium
  • Ratio Blaster
  • Ratios Puzzle (advanced)

Factors and Multiples

  • Fruit Splat GCF
  • Fruit Splat LCD
  • LCM Venn Diagram
  • GCF Venn Diagram
  • Factor Pairs Applet

Rates
  • Rates Matching
  • Rates Interactive

Probability
  • Probability Matching
  • Marble Mania
  • Plinko Probability Simulation
  • Deal or No Deal
  • Guess the Number
  • Two Dice Sum Probability
  • Great Expectations Experiment

Mixed Skills
  • Computation Castle
  • Burnside's Billions
  • Tipster
  • Phet Estimation
  • Best Math Friends (word problems)
  • Number Eaters (try this!)
  • Number Munchers (Leveled Version)
  • Number Munchers (Java Version) + ActiveGS Version (requires plugin) + iPhone/iPad app
  • Fraction Munchers (Java Version) + ActiveGS Version (requires plugin)

Skills Practice


More practice quizzes categorized by topic can be found on the Math Skills Practice page.

Ratios
  • Ratios Quiz
Rates
  • Rates Challenge

Probability
  • Coming soon...

Video Tutorials


Forgot how how to find unit rates? Need a refresher on combinations and tree diagrams? Watch these video tutorials from the Khan Academy. Most video clips are between 5 and 10 minutes in length and are presented in a simple, yet easy-to-understand format.

Ratios
  • Introduction to Ratios
  • Ratios as Fractions
  • Ratio Word Problem 1
  • Ratio Word Problem 2
  • How to Make a Scale Drawing

Rates

  • Solving Unit Rates Problem 1
  • Solving Unit price Problem

Probability

  • Probability Explained
  • Probability Example
  • Probability Example 2
  • Estimating Probability
  • Flower Pot Combinations
  • Using Tree Diagrams
  • Coin Probability 1
  • Coin Probability 2
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