Curated OER
Balancing the Scales: Understanding Ratios
Students are introduced to the concept of ratios. In groups, they convert sets of numbers into a ratio. After practicing, they use the ratios and proportions to solve story problems. They also calculate map distances and discover map...
Curated OER
Molarity, Excess and Percent Yield
In this molarity worksheet, students are given balanced equations and they are to calculate the mass or volume of reactants and products. Students calculate the theoretical, percentage, and actual yield for chemical equations. This...
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Different Perspectives of Oregon's Forest Economic Geography
Students map data on employment in wood products manufacturing in Oregon counties. In this Oregon forest lesson, students discover the percentage of people employed in the forest manufacturing industry. Students create a box and whisker...
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It's a Family Affair!
Sixth graders review the relationship between fractions, decimals, and percentages. In this fraction lesson, 6th graders turn fractions into decimals using division and move the decimal for a percentage. They complete a corresponding...
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Perplexing Perimeters
In the process of constructing their own "rulers" Students develop a sense of the size of a centimeter and meter. Students select the appropriate "ruler" for the tasks. Finally, 3rd graders calculate the perimeter of objects using...
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Fair Games
Fifth graders examine the statistics of playing games. Many games of chance and activities in maths text books involve rolling two dice and combining the scores, usually by addition. Students often find the probabilities of such events...
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The Stock Market-Tracking and Picking Stocks
Students interpret the stock market. They pick preferable stocks based on price to earnings ratios listed in the quotes. They practice using fractions and decimals to calculate the cost of selling and buying various stocks using...
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Math Assessment
In this math worksheet, students complete the test that focuses upon the skills of completing basic calculations, fractions, and percentages.
Curated OER
Other Aspects of Aqueous Equilibria
In this aqueous equilbria activity, students write the solubility product expressions for the given salts. Students determine what affects the solubility of salts. Students calculate the pH of a buffer solution. This activity has 14...
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Getting The Point
Students complete a unit of lessons on the relationships between decimals, whole numbers, and fractions. They use paper strips to solve fraction problems, view and solve examples, and use calculators to convert fractions into decimal...
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Take A Chance Or Two
A two-part instructional activity immerses young statisticians in the concept of probability. On the first day, will conduct experiments with a two-colored coin and learn how to write probabilities as fractions, ratios, and percentages....
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Choose or Lose: The Electoral Process
Learners examine the local and national election process. In groups, they brainstorm a list of the issues important to them and compare them to an overall list of issues present in the election. They analyze graphs and complete...
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Computing Discounts
In this computing discounts worksheet, students with a partner problem solve and calculate the answers to ten word problems and mathematical equations involving sales price, discounts, percents and decimals.
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Reacting Masses Problems
In this reactions worksheet, student determine the products of a reaction, balance an equation, and calculate the number of moles in an experiment. This worksheet has 4 problems to solve.
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Mixture Problems
Ninth graders explore the concept of mixture problems. In this mixture problem lesson, 9th graders use beads to resemble liquids. Students mix different amounts of beads to create different percentages of mixtures.
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Composition of Ocean Water
Learners experiment to determine the composition of ocean water. In this ocean water composition lesson, students color in a grid that shows the percentage of each of the components of ocean water which include chloride, sodium, sulfate,...
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Watt Power
Learners discuss the concept of power and the meaning of watts. For this experimental lesson students divide into groups, record data and calculate the results.
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Ranking Salinity
Learners explain the uses of titration in chemistry and in industry. In this chemistry lesson, students determine the concentration of an unknown solution using titration. They calculate the percent of salt in saline solutions.
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Chromosomes
Students study chromosomes and how molecular half life affects them. In this chromosome lesson students complete several lab activities on calculating half life, and cracking alkanes.
Curated OER
Probability - Mutually Exclusive Events
In this probability worksheet, students calculate the probability of given situations. They complete compound probability of independent events. This one-page worksheet contains six problems.
Balanced Assessment
Chance of Rain
Will it rain during the weekend? Pupils become meteorologists for a day as they use the assessment to determine the chance of rain for Saturday and Sunday. Class members interpret the weather statements as they pertain to probabilities...
Beyond Benign
Punnett Square Possibilities
Discover possible genetic outcomes through Punnett Squares. Learners continue studying genetic traits in the 10th lesson in the 17-part series. After determining the father of Sparky's kittens, scholars now attempt to predict the traits...
Curated OER
Stoichiometry
In this stoichiometry worksheet, students identify types of reactions, show the products, and balance the equations. Students determine the limiting reagent, theoretical yield, and percent yield for given reactions. This worksheet has 5...
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.