Worksheet
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Dihybrid Cross Punnett Squares

For Students 9th - 12th
In this dihybrid cross worksheet, students complete two punnett squares for the cross of two traits. They determine the genotypes, phenotypes and phenotypic ratios of the offspring.
Unit Plan
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It's Greek to Me!

For Teachers 6th
Students explore Greek Mythology. In this Greek Mythology unit, students read myths, pantomime vocabulary words, practice research skills, create city-states, and demonstrate knowledge of ratios and proportions. This unit includes many...
Worksheet
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Circles and Squares

For Students 9th - 12th
In this area learning exercise, students find the ratio of 1 area problem.  Students find the ratio of areas of inscribed circles to circumscribed squares.
Worksheet
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Percent Notation

For Students 7th - 10th
In this algebra worksheet, students divide circles into equal portions as they explore percents and decimals. They convert between decimals and fractions using ratio and proportion. There are 8 questions.
Lesson Plan
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Math and the Greek-Golden Proportions

For Teachers 4th
Fourth graders study math and the golden mean. For this math meets Greek history lesson, 4th graders study ratios and proportions in relation to the Greeks. The use of clay is incorporated ino this lesson. 
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Slope Exploration

For Students 9th
In this slope exploration worksheet, 9th graders solve and complete 18 different problems that include graphing and investigating the slope of various equations. First, they graph each pair of points and draw a line that contains both...
Lesson Plan
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Robot Gears

For Teachers 9th - 12th
Learners build simple gear trains and record data to discover how to compute gear ratios. They investigate the definition of torque and how torque can be increased or decreased in a gear train.
Lesson Plan
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How Stuff Is Put Together (Chemical Bonding)

For Teachers 4th
Fourth graders participate in a simple experiment that shows the ratio of elements that make up water.
Lesson Plan
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Paying for Crime

For Teachers 9th - 12th
Students participate in activties examining ratios and proportions. They use graphs to interpret data showing the government's budget for prisons. They present what they have learned to the class.
Lesson Plan
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Graphing and the Coordinate Plane

For Teachers 7th - 8th
Students examine the four quadrants of Cartesian coordinate plane. They play maze games and coordinate games to discover how to read and plot points on the plane. Students plot points on the coordinate plane and examine the ratio of...
Lesson Plan
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Build a Skittles Graph

For Teachers 7th - 11th
Students construct a bar graph with a given set of data. They calculate the ratio and percent of the data. Students discuss alternate ways of graphing the data as well as multiple strategies to approach the task.
Lesson Plan
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Density

For Teachers 1st - 4th
Students explore and analyze the relationship between density, mass, volume and ratios. They complete a lab to define mass and volume and then show the density that equals a mass and volume formula. Their lab involves a suitcase,...
Worksheet
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Pea Plants Dihybrid Cross

For Students 8th - 10th
In this dihybrid cross worksheet, students are given four crosses to complete using punnett squares. They determine the genotypic and phenotypic ratios of the offspring.
Worksheet
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Understanding Chemical Equations

For Students 10th - Higher Ed
In this chemical equations learning exercise, students identify the reactants and the products, state what phase each is in, and state the mole ratios of all the products and reactants. Students complete 10 problems.
Lesson Plan
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Colorful Fractions

For Teachers 4th - 5th
Students use charts to show fractions.  In this fractions and percents lesson, students review fractions, percents and ratios.  Students create tables and color the cells to make different fractions.  Students answer...
Lesson Plan
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Scale

For Teachers 9th - 10th
Students apply concepts of scales to solve problems. In this geometry lesson plan, students solve real world problems using scales, proportions and ratios. They predict the actual size of a model given the scale drawings.
Worksheet
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Doctors and Lawyers

For Students 9th - 12th
In this secondary mathematics worksheet, high schoolers use the given data regarding the average ages of a group of doctors and lawyers to determine the ratio of doctor to lawyers in the group.  The one page worksheet contains one...
Lesson Plan
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Fashion Sense and Dollar Wise

For Teachers 6th - 8th
Students 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 consumer...
Worksheet
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Further Trigonometry

For Students 11th - 12th
In this trigonometry worksheet, students solve and complete 5 various types of problems. First, they find the exact ratios for each trigonometric function. Then, students use the expansion to find the exact value of a given trig...
Worksheet
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Metrics

For Students 7th - 12th
For this metrics worksheet, learners read information about the metric system. Students review the concepts of prefixes, conversion ratios, and the decimal system. This worksheet has 17 matching, 31 fill in the blank, and 8 word problems.
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The Earth and Moon to Scale

For Students 9th - 12th
In this Earth and Moon instructional activity, students find the ratio of the Earth's radius to the Moon's radius, they compare the diameter of the Earth and Moon, they create paper models to scale of the Earth and Moon and they compare...
Worksheet
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Estimating Maximum Cell Sizes

For Students 11th - 12th
In this estimating cell sizes activity, students read about the relationship between a cell's size and the rate of cell waste diffusion. Students solve 4 problems including writing the equation for the rate of waste exchange, finding the...
Lesson Plan
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The Mass of the Moon

For Teachers 9th - 10th
In this mass of the Moon worksheet, learners use the lunar orbit and the orbit period to determine the mass of the Moon. They solve 4 problems including finding the mass of the Moon, determining the ratio of the Moon's mass to the...
Worksheet
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SAT Problem Solving Practice Test 06

For Students 9th - 12th
In this SAT worksheet, students solve 10 multiple choice questions.  Students find ratios, integer relationships, prime numbers, etc.

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