Curated OER
Word Problems from the Football Match
In this math instructional activity, students solve 10 word problems pertaining to the sport of English football (soccer). Included are money, elapsed time, addition and subtraction operations. Note: This is best suited to UK students;...
Curated OER
A Matter of Timing
In this orbital period worksheet, students solve 2 problems about satellites and their orbits. They determine how many days it takes for two satellites to be in "opposition", they find the least common factor between their orbit periods...
Curated OER
Calendar
In this calendar worksheet, students learn to use a calendar to find the elapsed time using the dates in the word problems. Students solve six problems.
Curated OER
Real Life Math Word Problems: Reading a Bus Schedule
In this math instructional activity, students solve 12 real life math word problems pertaining to bus schedules and elapsed time. This page is from the UK and the cities and towns are from that region.
Curated OER
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...
Curated OER
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...
Curated OER
2004 U.S. National Chemistry Olympiad Part I
In this chemistry worksheet, test takers answer 60 multiple choice questions on topics related to chemistry from balancing equations to calculating moles and molecules of compounds. They name formulas, they convert, they solve problems...
Inside Mathematics
How Old Are They?
Here is a (great) lesson on using parentheses! The task requires the expression of ages using algebraic expressions, including the distributive property. Pupils use their expressions to determine the individual ages.
Curated OER
THEMIS: A Magnetic Case of 'What Came First?'
In this magnetic reconnection worksheet, students solve seven problems using the data and graphs from the THEMIS satellite constellations, which show a series of events triggered by a magnetic reconnection. Students interpret the data in...
Curated OER
Modeling the Keeling Curve with Excel
In this modeling the Keeling Curve worksheet, students use given data beginning in 1960 to create a mathematical model for the changes in atmospheric carbon dioxide over time. Students manipulate the equation to predict the carbon...
Curated OER
Working with Half-Life
In this half-life learning exercise, students use a given table of half lives, mass, time and amount of original sample to solve for unknowns in nine given half-life problems.
Curated OER
Super-Fast Solar Flares!
In this solar flares worksheet, students observe a sequence of figures of a solar flare observed in 2003 from the Ramaty High Energy Solar Spectroscopic Imager satellite. Students solve 6 problems including finding the scale of each...
Curated OER
Variables and Expressions from Around the Cosmos
In this variables and expressions worksheet, students solve 7 problems using different mathematical formulae to find the length of Earth's day in the future, the distance to the galaxy Andromeda, the temperature of a gas cloud emitting...
Curated OER
The Comet Encke Tail Disruption Event
In this comet tail disruption instructional activity, students solve 7 problems using two images from NASA's STEREO satellite showing the breakup of the comet's tail. Students analyze the diagram and use the scale to solve the problems...
Curated OER
Measuring the Speed of a Solar Tsunami!
In this solar tsunami worksheet, learners are given three images of the progress of a Morton Wave on the sun. They solve six problems using the images to find the radius of the sun's disk, the scale of the image, and the time that passed...
Curated OER
Hard Boiled
For this algebra worksheet, 9th graders investigate what the best method is to time the 15 minutes required to boil an egg. They use two hour glass with different time measurements to answer this question.
Curated OER
Bug Race
In this motion worksheet, students compare two graphs showing a bug's distance traveled over time. Students calculate the average speed of the bugs and determine which bug was traveling at a constant speed. This worksheet has 1 short...
Curated OER
Locations of Objects
For this locations of objects worksheet, students solve 5 different problems that include counting objects and determining where each is located. First, they identify the location of each object. Then, students fill-in the correct bubble...
Curated OER
The Mysterious Hexagon on Saturn!
In this Saturn worksheet, students use a photograph of a hexagon feature on Saturn to solve three problems. These include finding the time it takes for the jet stream to complete one circuit around the hexagon, to find the size of the...
Curated OER
Moving Magnetic Filaments Near Sunspots
In this sunspots worksheet, students observe two images taken by a solar observatory over a certain amount of time. Students determine the changes in the pictures and then calculate how fast and in what direction the particles are...