Shared Gizmo List: MP2- Richmond City 8th Grade Math

Gizmos to follow Richmond City Public School's 8th Grade Math Pacing Chart
Math 8

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Shared by an elementary school math and science teacher.

8.16: Patterns Functions and Algebra: Graphing Linear Equations

Defining a Line with Two Points (Classic) Place two points wherever you like. Compute the slope of the line between them. View the equation of that line in slope-intercept and point-slope form.
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Point-Slope Form of a Line Compare the point-slope form of a linear equation to its graph. Vary the coefficients and explore how the graph changes in response.
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Slope-Intercept Form of a Line Compare the slope-intercept form of a linear equation to its graph. Vary the coefficients and explore how the graph changes in response.
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Standard Form of a Line Compare the standard form of a linear equation to its graph. Vary the coefficients and explore how the graph changes in response.
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8.3: Computation & Estimation: Solving Problems with Proportions Data

Adding on the Number Line Add real numbers using dynamic arrows on a number line. Find the sum of the numbers at the end of the final arrow. Compare the numerical calculation.
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Beam to Moon (Ratios and Proportions) Apply ratios and proportions to find the weight of a person on the moon (or on another planet). Weigh an object on Earth and on the moon and weigh the person on Earth. Then set up and solve the proportion of the Earth weights to the moon weights.
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Estimating Population Size Adjust the number of fish in a lake to be tagged and the number of fish to be recaptured. Use the number of tagged fish in the catch to estimate the number of fish in the lake.
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Part-to-part and Part-to-whole Ratios Compare a ratio represented by an area with its percent, fraction, and decimal forms.
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Percent of Change Apply markups and discounts using interactive "percent rulers." Improve number sense for percents with this dynamic, visual tool. Reinforce the original cost (or original price) as the baseline for percent calculations.
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Percents and Proportions Find a part from the percent and whole, a percent from the part and whole, or a whole from the part and percent using a graphic model.
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Polling: Neighborhood Conduct a phone poll of citizens in a small neighborhood to determine their response to a yes-or-no question. Use the results to estimate the sentiment of the entire population. Investigate how the error of this estimate becomes smaller as more people are polled. Compare random versus non-random sampling.
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Proportions and Common Multipliers Complete a proportion using a graphical model. Use counters to fill cells in the numerators and denominators given. Use the visual pattern to determine how many counters to put in the missing numerator or denominator.
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Compound Interest Explore compound interest in-depth, from compounded annually to compounded continuously. In addition, compare the END POINTS graph, with dots that fit an exponential curve, to the ALL TIME graph, which has a more step-like appearance.
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Modeling and Solving Two-Step Equations Solve a two-step equation using a cup-and-counter model. Use step-by-step feedback to diagnose and correct incorrect steps.
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Solving Equations by Graphing Each Side Solve an equation by graphing each side and finding the intersection of the lines. Vary the coefficients in the equation and explore how the graph changes in response.
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Solving Two-Step Equations Choose the correct steps to solve a two-step equation. Use the feedback to diagnose incorrect steps.
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Compound Inequalities Explore the graphs of two inequalities and find their union or intersection. Determine the relationship between the endpoints of the inequalities and the endpoints of the compound inequality.
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Solving Linear Inequalities in One Variable Solve one-step inequalities in one variable. Graph the solution on a number line.
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8.5: Computation and Estimation Perfect Squares and square roots

Square Roots Explore the meaning of square roots using an area model. Use the side length of a square to find the square root of a decimal number or a whole number.
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Ordering and Approximating Square Roots Order square roots on a number line. Approximate the square roots using the side lengths of square regions in a grid.
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8.10 a,b: Geometry: Pythagorean Theorem

Distance Formula Explore the distance formula as an application of the Pythagorean theorem. Learn to see any two points as the endpoints of the hypotenuse of a right triangle. Drag those points and examine changes to the triangle and the distance calculation.
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Pythagorean Theorem with a Geoboard Build right triangles in an interactive geoboard and build squares on the sides of the triangles to discover the Pythagorean Theorem.
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Pythagorean Theorem Explore the Pythagorean Theorem using a dynamic right triangle. Examine a visual, geometric application of the Pythagorean Theorem, using the areas of squares on the sides of the triangle.
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8.6: Measurement: Angle Relationships

Investigating Angle Theorems Explore the properties of complementary, supplementary, vertical, and adjacent angles using a dynamic figure.
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Dilations Dilate a figure and investigate its resized image. See how scaling a figure affects the coordinates of its vertices, both in (x, y) form and in matrix form.
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Quilting Bee (Symmetry) Participate in an old-fashioned quilting bee and create a colorful, symmetrical quilt. Quilts can be created with a vertical, horizontal, or diagonal line of symmetry. Quilts can be folded to look for reflections, or rotated to test for rotational symmetry.
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Reflections Reshape and resize a figure and examine how its reflection changes in response. Move the line of reflection and explore how the reflection is translated.
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Rock Art (Transformations) Create your own rock art with ancient symbols. Each symbol can be translated, rotated, and reflected. After exploring each type of transformation, see if you can use them to match ancient rock paintings.
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Rotations, Reflections, and Translations Rotate, reflect, and translate a figure in the plane. Compare the translated figure to the original figure.
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