Curated OER
Aldridge Sawmill -- The Story in Numbers
Seventh graders view a recent transparency of the average rainfall zones of the state of Texas. Using another transparency, they identify the Piney Woods subregion of the Gulf Coastal Plain and locate national forests and sawmills. ...
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The Clumsy Tiler N (Metric)
Students explore patterns and geometric sequencing. Students devise and use problem solving strategies to explore situations mathematically. Students solve real life problems. They demonstrate, with cardboard pieces, fraction and...
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Adding Ten Tiles I
Students practice this problem that needs a certain amount of experimentation (trial and error) to get any answer at all. In the process they practice their basic number facts. However, to get the complete set of answers Students need to...
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Watt's Up
Students analyze energy efficiency in lighting by visiting eight different classroom stations, determine cost vs. light output, graph their results, and answer questions on worksheet.
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Understanding Fractions
Students add and subtract fractions and multiply and divide fractions using pattern blocks.
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Patterns In Fractals
Students find number patterns in the generation of several different types of fractals.
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Expected Value
Students explore expected value, are introduced to the concept of varying payoffs, and have used a computer simulation of a "real world" example where expected value is used
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Jesse's Ice Cream Stand
Students discover ways to earn money through business. They explain how to calculate profit using an income statement and evaluate the best price to scoop size combination for profit. They discuss business opportunities for teens.
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How Cool Is Your Environment?
Students study the formulas for calculating heat energy and how to convert Celsius to Fahrenheit. They apply the formulas on a worksheet.
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The Cost of Life
Students research the salary for a career of interest. They consider what kind of lifestyle that career would provide and graph their information for comparison.
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Slope Calculation
Students practice calculating the slope of a line. They explain how the formula is derived and identify properties that are associated with positive, negative and undefined slopes. They complete an online activity as well.
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Properties of Fractals
Pupils build a working definition of a regular fractal, they measure the concepts of dimensions and scale, they explore the concept of a logarithm and they attempt to solve simple exponential equations for the exponent both by trial and...
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Chaos
Students experiment with several chaotic simulation, they build a working definition of chaos. Students reinforce their knowledge of basic probability and percents. They are reminded of previous knowledge that is pertinent to this...
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Irregular Fractals
Students study and research irregular fractals and construct a few based on their research. Students practice pattern recognition skills and plane geometry skills calculating dimensions on the Fractured Pictures activity.
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The Mandelbrot Set
Students explore the Mandelbrot Set. They are introduced to the concept of a complex number and function in order to motivate the discussion of Julia and Mandelbrot sets. Students investigate fractals and how they are built.
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Squares Have Roots?
Students define a square and connect this information to a square root. In this square root instructional activity, students make a chart listing square numbers and their roots.
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How Much Does it Cost to Light Your School?
Students explore the cost of electricity used to light their classrooms. They compute the cost of electricity as well as the number of kilowatt hours of electricity used during the school year. Students compute the number of tons of coal...
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Pepe Cleaners
Seventh graders gather data to determine the relationships between the base and height of rectangles with fixed perimeters and express the relationships using words and symbols. Students build rectangles with pipe cleaners. They create...
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A Real-Life Application of Ratio
Pupils discuss the concept of "aspect ratio" of the Helios Prototype. They find real life objects that are taller or shorter than them by a certain amount. They practice with ratio and measurement.
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The Amazing Mathematical Race: Boxing the Rare Element
Middle schoolers enter a race against time to determine the maximum sized box that can be formed from a standard sheet of copy paper. The boxes are to be used to contain a valuable and rare element which is light as cotton and corrosive...
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The Box with the Greatest Volume
Students use measurement tools to measure the nearest 16th of an inch. They connect fractions and their decimal equivalents and compare this with other decimals. Finally, the class uses algebraic concepts and formulas to solve problems.
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Addition & Subtraction Word Problems
In this addition and subtraction word problems learning exercise, students examine, analyze and develop a variety of word problems solving skills involving both addition and subtraction.
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Venn Diagrams & Word Problems
Students explore the concept of Venn Diagrams through word problems. In this Venn Diagram lesson, students solve word problems about groups of people using Venn Diagrams. Students use survey results about MySpace and Facebook in a Venn...
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Ordering and Computing with Negative Fractions and Decimals
Seventh graders explore the concept of computing negative fractions and decimals. In this negative fractions and decimals lesson, 7th graders compare ordering positive fractions to ordering negative fractions. Students use mirrors to see...
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