Curated OER
Comparing Ratios
Students solve problems using ratio and proportion. In this math comparison instructional activity, students identify methods used to solve and compare ratio and proportion in the real world. They apply criss cross multiplying to solve...
Beacon Learning Center
Bowling Over the Order of Operations
Upper graders will solve equations using order of operations, and create equations that to play a fun math bowling game. They will bowl using dice to practice operations. Extensions are also included.
Curated OER
Miami Seaquarium and Mathematics
Eighth graders, in groups, go on an imaginary field trip to Miami Seaquarium and figure out what the total cost of the trip would be.
Curated OER
Smoking: The Real Cost
Third graders discuss the adverse effects of smoking and predict the financial cost of a smoking habit. They collect data regarding the cost of a pack of cigarettes and average packs smoked a day. They create bar graphs displaying the...
Curated OER
Every Breath You Take
Students explore the nature of the air we breathe by observing petri dishes that have accumulated particulate matter from the atmosphere. Students make mathematical calculations and inferences about the effect of this matter on...
Curated OER
Words To Numbers
Seventh graders explore the four steps to problem solving. After observing a problem solving chart and discussing each step, 7th graders solve individually assigned word problems. Upon completion, they share their information with the...
McGraw Hill
Glencoe: Self Check Quizzes 2 Percent Discount and Sales Tax
Use Glencoe's Math Course 2 randomly generated self-checking quiz to test your knowledge of percent discount and sales tax. Each question has a "Hint" link to help. Choose the correct answer for each problem. At the bottom of the page...
Khan Academy
Khan Academy: Discount, Tax, and Tip Word Problems
Practice solving word problems involving price discounts, taxes, and tip calculations. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Yale University
Solving Problems by the Hundreds
This site contains a study of percentage and its applications in the study of consumer related problems. Problems involving sales tax are included. Examples, explanation, solutions and a bibliography are also included in the site.
Goodwill
Gcf Global: Percentages in Real Life
Learn how to calculate percentages in real-life situations, from sales tax to discounts to tips.
ClassFlow
Class Flow: Sales Tax
[Free Registration/Login Required] In this flipchart, students apply ratio, percent, and direct proportion in situations. Students solve problems involving percentages such as percent increase/decrease, tax, commission, and discount.
Yale University
Yale New Haven Teachers Institute: Solving Problems "By the Hundreds"
The Yale-New Haven Teachers Institute site contains various math exercises relating to percentage and consumer-related problems. An explanation of sales tax, a related problem and answer are given.
ClassFlow
Class Flow: Percentages
[Free Registration/Login Required] In this flipcharts, students use the interactive tools to solve various rational number problems involving percentages (e.g., percent increase/decrease, tax, commission, and discount).