Curated OER
Molecules, Moles and Molar Masses
In this molecules, moles and molar masses worksheet, students find the atomic masses of 8 elements, they write the formulas for 6 diagrams of molecules and they find the molecular masses of 12 compounds. Students also find the fraction...
Curated OER
Count The Letters
Students perform activities involving ratios, proportions and percents. Given a newspaper article, groups of students count the number of letters in a given area. They use calculators and data collected to construct a pie chart and bar...
Curated OER
Fractions, Decimal, Percent Relationships.
Students solve problems involving fractions, decimals and percents. For this algebra lesson, students examine the relationship between fractions and percents and between decimals and percents. They convert between percents, decimals and...
Creative Chemistry
Determining the Enthalpy Change of a Reaction
In this enthalpy of reactions learning exercise, learners use a known amount of copper (II) sulphate solution and an excess of zinc powder to calculate the reaction's enthalpy change. Students measure the temperature change throughout...
Curated OER
A Fraction of the Possibilities
Students review the conversion of fractions to decimals, develop strategies to compare fractions perform complex calculations using ratio techniques similar to the construction of fractions.
Curated OER
Penny Lab
In this percent composition worksheet, students carry out an experiment to determine the percent of zinc in a penny. They write a balanced equation for the chemical reaction they performed with the penny and hydrochloric acid.
Curated OER
Fashion Sense and Dollar Wise
Middle schoolers work in groups to show understanding of the relationship between fractions, decimals, percentages, and the application of ratios and proportions. In this decimals, fractions, and percents lesson, students use real life...
Curated OER
Visual Fractions
Leanrers observe models of fractions and use a calculator to represent numbers as decimals, fractions, and percents. They participate in calculator activities to view different representations of the same number.
Curated OER
Are You 100%?
Students use decimals, fractions, and percents to solve problems in a real world setting.
Curated OER
Everything You Ever Wanted to Know About Stoichiometry
In this chemistry worksheet, students identify the process of Stoichiometry and use it to calculate various chemical reactions similar to that of a recipe. In addition, they identify a connection between isoamyl alcohol and the product...
Curated OER
Slopes for the Mathematically Inclined
For this slope worksheet, 9th graders solve and complete 6 different problems that include completing charts and applying applications to the real world. First, they use the pictures shown to measure the riser and tread of 3 consecutive...
Curated OER
Additional Stoichiometry Review Problems
In this stoichiometry instructional activity, students interpret a chemical equation, determine number of moles produced or mass of product, and solve for the limiting reactant for reactions. This instructional activity has 25 problems...
Curated OER
Ratio, Rates and Percentages
In this ratio, rates and percentages activity, 8th graders solve 22 various types of problems related to ratios, rates and percentages. They first write ratios in lowest terms and describe each of comparison stated. Students also solve...
Curated OER
Function Tables and Money
In this function tables, money worksheet, students examine 2 different function tables, where they are given input information. Kids determine the rule of the function table, then calculate the missing output values. The first table...
Curated OER
Proportional Reasoning
In this proportional reasoning activity, students use proportions to solve discount and sale problems. This two-page activity contains 4 multi-step problems.
Curated OER
Numbers
In this interest worksheet, students calculate interest and percentages of numbers in number and word problems. Students complete 29 problems.
Curated OER
Basketball Calculating Percentage
Seventh graders calculate percentages, convert fractions to decimals, and decimals to fractions using information from a basketball game.
Curated OER
Number Systems and Mental Math
In this Number System activity, students solve thirty problems using mental math and ten with a calculator. Students also classify numbers as rational or irrational.
Noyce Foundation
Mixing Paints
Let's paint the town equal parts yellow and violet, or simply brown. Pupils calculate the amount of blue and red paint needed to make six quarts of brown paint. Individuals then explain how they determined the percentage of the brown...
Mathed Up!
Reverse Percentages
Boost math skills and inspire scholars to show what they know with a six-page independent practice that focuses on proportional relationships and percents.
101 Questions
Dueling Discounts
What a bargain—an informative, free resource! Given prices of several objects, learners determine whether 20 percent off or $20 off would be a better bargain. They use the results to come up with a generalization of the situation.
Curated OER
Birds, Fractions and Percentages
Learners study fractions, percentages, spreadsheets, and computers by watching and recording the number of species of birdsseen. They create a spreadsheet to record the results of their one month study.
Mathed Up!
Fractions, Decimals, and Percentages
After watching a video on making conversions, young mathematicians solve 16 math problems that involve making conversions of fractions to decimals and percents, decimals to fractions and percents, and percents to fractions and...