Curated OER
Use Google Maps to Teach Math
Capture the engagement of young mathematicians with this upper-elementary math lesson on measuring time and distance. Using Google Maps, young scholars first measure and compare the distance and time it takes to travel between different...
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Time Zones in the United States
Eighth graders explore how to use the time zones in the United States and internationally. They use elapsed time to solve problems. Students calculate the time in various places in the United States. They discuss the 6 time zones in the...
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Time Problems in Context
In this time problems in context worksheet, middle schoolers solve 40 real life telling time problems. Students use timetables to calculate travel times and also use a pay scale to figure out weekly earnings in English pounds and pence....
Balanced Assessment
Dinner Date
Determine just how far to run before dinner. The short assessment asks pupils to determine the distance a person can jog in the time left before dinner. To answer the question, scholars determine the distance if the person jogs one way...
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The Babylonian Algorithm, Limits and Rates of Change
In this successive approximations worksheet, students use the Babylonian algorithm to determine the roots of given numbers. They identify the limits of a function, and compute the rate of change in a linear function. This two-page...
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2004 U.S. National Chemistry Olympiad Exam Part II
In this National Chemistry Olympiad test, junior chemists answer eight problem solving questions on a variety of topics. These include calculating molarity of solutions, determining rates of reactions, calculating decay and discussing...
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2000 U.S. National Chemistry Olympiad National Exam - Part I
The National Chemistry Olympiad exams are comprehensive tests covering an entire year of chemistry concepts. You can use them as practice for competing in the challenge, or simply as a review, or as an actual final exam for your general...
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2007 U.S. National Chemistry Olympiad Part II
Eight multi-step chemistry problems, including analyzing a titration, writing equations, predicting products and limiting reagents, calculating concentrations of ions, and using stoichiometry to solve for unknowns in reactions make up...
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2000 U.S. National Chemistry Olympiad Part II
In this chemistry olympiad problem solving worksheet, chemistry pupils solve eight problems on a variety of topics including periodic trends, phase changes, ionization reactions, catalysts and titrations.
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2001 U.S. National Chemistry Olympiad National Exam Part II
Only eight problems are on this competitive national chemistry exam. It required the balancing of chemical equations, solving stoichiometry questions, and more. This is part two of three of the national exam. Also available is a local...
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2002 U.S. National Chemistry Olympiad National Exam - Part I
As to be expected from the American Chemical Society Olympiad Examinations Task Force, this 60-question test tops the charts in terms of excellence. It consists entirely of multiple choice questions designed to assess a year's worth of...
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Suns Path and Seasons
Using a plastic dome to represent the hemisphere of the sky, your class is able to demonstrate the path of the sun at different points of the day and year. They use a protractor to record movement and answer questions about elapsed...
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Not Your Average Average
Students discover that if a distance is traveled in two or more segments at different average speeds, you cannot average the average speeds. Instead the total distance traveled must be divided by the total elapsed time. Students practice...
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Timing the Transit of Venus
Middle schoolers calculate elapsed time and look for patterns.
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Euler's Method
In this Euler's method worksheet, students use Euler's method to determine one-second time intervals in a rate problem. They explore functions to estimate rate changes in small time intervals. This two-page worksheet contains...
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How Can we Measure the Rate of a Chemical Reaction?
Students examine different types of chemical reactions. They explore how alcohol molecules affect the reaction rates. They answer discussion questions to end the lesson.
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Travel Time
High schoolers use a migration map to estimate the distance traveled by a bird while migrating south. After calculating accurate estimates of the distance traveled, students compare the distances traveled with the amount of time elapsed.
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2008 U.S. National Chemistry Olympiad Part I
In this chemistry Olympiad worksheet, students solve sixty multiple choice questions on a variety of chemistry topics from finding molarity of solutions to calculating products of reactions. Students are given graphs, equations, reaction...
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1999 U.S. National Chemistry Olympiad Part II
A variety of topics including reaction rates, combustion reactions, periodic trends, and ionization reactions are included in this exam. Test takers also practice calculating empirical and molecular formulas of compounds.
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Speed
Students explore speed by calculating the average speed of several snowmobiles, and predicting which of them is the fastest. They watch a race to verify their calculations.
Virginia Department of Education
Weathering of Limestone
We all know limestone weathers, but what affects the rate of weathering? Young scientists investigate the physical and chemical weathering of limestone (chalk) through experimentation. First, they conduct trials with different-size...
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Data Analysis: Infiltration Rate and Composition of Concrete
Young scholars collect and graph data. In this statistics instructional activity, students analyze data using a spreadsheet program. They display their data effectively and analyze it.
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Bridge-Crossing Puzzle
In this bridge-crossing learning exercise, students read a word problem. They use logic and deductive reasoning to determine the correct combination for two men to cross a bridge at the same time to get the anticipated results. This...
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Introduction to Earning Interest: What are APR and APY?
Students explore saving and investing money. In this middle school personal finance lesson, students define and use investment vocabulary, explore compound interest and its effect of savings, and compute simple and compound interest. ...