Sunday, July 27, 2014

Learning Resources Folding Geometric Shapes Reviews

Learning Resources Folding Geometric Shapes
Customer Ratings: 4.5 stars
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I teach 7-8 grade math and love these foldable geometric shapes. My students quickly grasp the concept of a "net" and how to find the surface area of a polyedron. They also are perfect for demonstrating the relationship between the volume of a prism and a pyramid with the same base area and height. I show them that scooping up 3 pyramid fulls of beads can fill up the corresponding prism, hence V = BH/3.

However, I recommend buying the EAI Education brand version instead. I've used both Learning Resources product and EAI's and found EAI's to be far superior. The plastic of EAI bends easier and fits better. And they color-coded the shapes to match up (corresponding pyramids are same color as corresponding prisms). Learning Resource colors don't have any particular logic to them. I couldn't find the EAI product on Amazon, so you'll probably have to go to their website. Search for "GeoModel EAI". I like the 10 cm size, although there are many options to choose from.

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These are wonderful to use in Math classrooms. I used it in the past for Middle School Geometry and now at College level. Surface Area, Volume, even density can all be explained using these shapes. The nets are durable and students can trace them and create their own 3-D figures.

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Excellent resources for teaching geometric solids and their nets. The plastic nets contained within each polygon fold out so that students can easily see the shapes that make up the polygon. You can purchase a set of solid transparent tiles for use with a transparency projector that compliment this set of solids. This additional set contains tiles showing the outlines of the geometric and solid colored tiles in the shape of the net. For example, the geometric solid of a hexagonal prism has a yellow plastic net folded inside the clear plastic solid. This net can be removed and unfolded. There are two tiles (in the complementary set)which coordinate with this shape a clear tile with the outline, in yellow, of the hexagonal prism's edges, and a transparent yellow tile in the shape of the hexagonal prism net.

I found these resources a vast improvement over the Power Solids that are traditionally used in Middle School. The price is also excellent.

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Essential resource for students to learn both the 2D and 3D representations of these geometric figures. Being able to remove the net from the three dimensional shape and visually see how one becomes the other, gives this product great value!

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These shapes are sturdy enough for home schooling or tutoring. I am not sure they would handle class room abuse. I used a sharpie to draw on the clear shape to show the layers for calculating volume. I had the students fll the large cube and pour them into the pyramid with the matching face and it shows perfectly how the volume od a pyramid is 1/3 of the cube. So much better then flat shapes in a book.....

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