Howard Hughes Medical Institute
Patterns in the Distribution of Lactase Persistence
We all drink milk as babies, so why can't we all drink it as adults? Examine the trend in lactase production on the world-wide scale as science scholars analyze and interpret data. Groups create pie charts from the data, place them on a...
Science Geek
Percent Composition, Empirical and Molecular Formulas
Help your pupils understand when empirical becomes molecular. The lesson presentation demonstrates the connection between empirical formulas and molecular formulas. Then, given percent composition, the lesson demonstrates the steps to...
Curated OER
Scatterplots
In this scatterplots activity, students construct a scatter plot from a given data set. Students then answer 4 questions regarding the least-squares regression line and making predictions.
Curated OER
Population Pyramids
Young scholars create a population pyramid based on current data for their final project country. They analyze data from comprehension trends of final project country. Students analyze populations of specific countries.
Curated OER
Finding Percents of a Number (A)
In this percents worksheet, students solve 40 problems in which the percent of a number is calculated. (Example: 35% of 31). There is no instruction on the page.
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
Calculating Percents 2
In this calculating percents practice worksheet, middle schoolers use their problem solving skills to calculate the percents of the 10 listed numbers.
Curated OER
A Number is X% of What Number?
In this algebra worksheet, students solve for the base of a number given the percent and its partial amount. There are 10 questions.
Curated OER
Fraction Worksheet
In this fractions worksheet, students complete fraction word problems dealing with numbers up to 12. Students complete 8 problems total.
Curated OER
Equivalent Fractions Worksheet: Worksheet 1, Level 4
In this fractions learning exercise, students solve 12 problems in which a fraction is analyzed. From four possible choices, students mark the fraction that is equivalent.
Curated OER
Measuring Supporting Structures
Students calculate the volume of the Pantheon's columns and estimate changes in weight given different parameters.
Curated OER
Decimal Stories
In this decimal worksheet, students fill in decimal numbers in a story, choosing from a "decimal box" at the top of the page, filling in blanks so that the story makes sense.
Curated OER
Finding Percent of Change/ Increase or Decrease
Seventh graders explore the skill of finding the increase and decrease of a quantity. Calculating the increase and decrease is covered by a percent. The proporition for finding a percent is also part of the lesson.
Curated OER
Are You 100%?
Students use decimals, fractions, and percents to solve problems in a real world setting.
Curated OER
Solar Storm Energy and Pie Graphs
In this solar storm energy and pie graphs worksheet, students solve 5 problems using pie graphs that show the amount of solar energy that is converted into radiation, kinetic energy, flare energy and flare energy that is lost to working...
Curated OER
Star Light...Star Bright
In this brightness of stars activity, students use a given formula using the temperature in Kelvins of a star to find its brightness. Students solve 4 problems using this equation.
Curated OER
Using Ratios to Taste the Rainbow
Students solve problems using ratios and proportion. In this algebra instructional activity, students analyze skittles and their different colors as they apply the properties of ratios and proportions to solve their problems.
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
Calculating Theoretical & Experimental Probability
Students collect data by conducting a survey of fellow classmates. They investigate the relationship between estimates obtained from samples and theoretical probabilities. Answer keys included.
Curated OER
Proportional Reasoning
In this proportional reasoning worksheet, students use proportions to solve discount and sale problems. This two-page worksheet contains 4 multi-step problems.
Curated OER
Fraction Conversion 2 (With Percents)
Fifth graders determine how to convert fractions, decimals, and percents. In this conversion lesson, 5th graders use an on-line applet to practice making these conversions. They review how to make the conversions in a whole class lesson...
Curated OER
Recipe For Disaster
Learners play an interactive game online to learn ratios. In this statistics lesson, students solve problems in an online game about ratio and relating statistics to the real world. This lesson provides hands on as well as teaching time.
Curated OER
Arc Length and Sectors
Find the length of an arc. Learners relate central angles to the area and length of a sector and graph circles on the TI to make predictions.
Curated OER
Wildlife Management
Students examine the effects of various management strategies on the size of wildlife populations. Each student simulates the management of an animal population in a card game, graphs the results of the wildlife game, and participate in...
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