Activity
Howard Hughes Medical Institute

Patterns in the Distribution of Lactase Persistence

For Teachers 9th - 12th Standards
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...
PPT
Science Geek

Percent Composition, Empirical and Molecular Formulas

For Students 10th - Higher Ed
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...
Worksheet
Curated OER

Scatterplots

For Students 8th - 12th
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.
Lesson Plan
Curated OER

Population Pyramids

For Teachers 9th - 12th
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.
Worksheet
Curated OER

Finding Percents of a Number (A)

For Students 5th - 6th
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.
Lesson Plan
Curated OER

Balancing the Scales: Understanding Ratios

For Teachers 5th - 8th
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...
Lesson Plan
Curated OER

Calculating Percents 2

For Teachers 6th - 8th
In this calculating percents practice worksheet, middle schoolers use their problem solving skills to calculate the percents of the 10 listed numbers.
Interactive
Curated OER

A Number is X% of What Number?

For Students 7th - 12th
In this algebra worksheet, students solve for the base of a number given the percent and its partial amount. There are 10 questions.
Worksheet
Curated OER

Fraction Worksheet

For Students 3rd - 5th
In this fractions worksheet, students complete fraction word problems dealing with numbers up to 12. Students complete 8 problems total.
Worksheet
Curated OER

Equivalent Fractions Worksheet: Worksheet 1, Level 4

For Students 5th - 6th
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.
Lesson Plan
Curated OER

Measuring Supporting Structures

For Teachers 9th - 12th
Students calculate the volume of the Pantheon's columns and estimate changes in weight given different parameters.
Worksheet
Curated OER

Decimal Stories

For Students 4th - 5th
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. 
Lesson Plan
Curated OER

Finding Percent of Change/ Increase or Decrease

For Teachers 7th
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.
Lesson Plan
Curated OER

Are You 100%?

For Teachers 5th - 6th
Students use decimals, fractions, and percents to solve problems in a real world setting.
Worksheet
Curated OER

Solar Storm Energy and Pie Graphs

For Students 7th - 10th
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...
Worksheet
Curated OER

Star Light...Star Bright

For Students 9th - 12th
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.
Lesson Plan
Curated OER

Using Ratios to Taste the Rainbow

For Teachers 9th - 11th
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.
Lesson Plan
Curated OER

A Fraction of the Possibilities

For Teachers 12th - Higher Ed
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.
Lesson Plan
Curated OER

Calculating Theoretical & Experimental Probability

For Teachers 9th - 12th
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.
Worksheet
Curated OER

Proportional Reasoning

For Students 7th - 10th
In this proportional reasoning worksheet, students use proportions to solve discount and sale problems. This two-page worksheet contains 4 multi-step problems.
Lesson Plan
Curated OER

Fraction Conversion 2 (With Percents)

For Teachers 5th
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...
Lesson Plan
Curated OER

Recipe For Disaster

For Teachers 8th - 10th
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.
Lesson Plan
Curated OER

Arc Length and Sectors

For Teachers 9th - 12th Standards
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.
Lesson Plan
Curated OER

Wildlife Management

For Teachers 7th - 10th
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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