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# Teaching Geometry with the Solids Elementary HD App!

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## Erica Bolick

on 27 November 2013

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#### Transcript of Teaching Geometry with the Solids Elementary HD App!

Teaching Geometry with the Solids Elementary HD App!
Common Core Standard
CCSS.Math.Content.K.G.B.4 Analyze and compare two- and three-dimensional shapes, in different sizes and orientations, using informal language to describe their similarities, differences, parts (e.g., number of sides and vertices/“corners”) and other attributes (e.g., having sides of equal length).
Learning Objective
Pros
Very easy to use
Hands on activity that gives students the freedom to explore
Has a wide variety of shapes with multiple features
Applicable for several different grade levels
Screen shot pictures and create worksheets.
Solids Elementary Say What?
CCSS.Math.Content.6.G.A.4 Represent three-dimensional figures using nets made up of rectangles and triangles, and use the nets to find the surface area of these figures. Apply these techniques in the context of solving real-world and mathematical problems.
After using the
Solids Elementary HD Application
, students will be able to analyze three-dimensional figures, describing different characteristics such as vertices and edges, by dissecting the shapes through the process in the application.

Students will also be able to recognize various nets made up of several different two-dimensional shapes by navigating through the features of
Solids Elementary
.
&
Cons
Not a free app
Must have an Ipad or Ipod/Iphone
Cannot see more than one shape at a time
Solids of revolution
Pyramid
Platonic Solids
Solids of Elementary HD is an application for Ipads.
The app starts by allowing students to choose which type of solid they would like to analyze. Students simply tap on one of the four options
If one were to choose prisms, he or she would then scroll through the various options of prisms. There is everything from a simple cube, to a right prism with an isosceles trapezoid base.
Here is an example of what the screen would first look like if one were to choose a cube.
From here, there is a help tool gives participants directions on how to maneuver the solid.
Students can choose any place on the solid and rotate/flip it in any way. This gives students the opportunity to really see all of the object from different angles. One can choose the 3rd option on the bottom of the screen to highlight the verticies and the 4th option to highlight the edges.
If you press the first option on the bottom, left corner, you can see all of the different nets of a cube. You can choose any net and play with it on the screen.
Once you have chosen your net, you can slide the ball on the right hand side up and down the line. This opens and closes the solid, showing the transformation from net to cube.
You can stop at any point and the net will freeze so you can analyze the transformation.
Here is an example of where you can change a particular line or vertex a different color simply by touching the point of interest. A list of colors will appear on the left hand side and you tap the color you wish. This allows students and teachers to pay close attention to certain sections of the solid.

At any point of time, a teacher can screen shot the picture. Depending on the grade level, the teacher can print out the screen shot, write on it, and make copies to create different worksheet where students can calculate area, surface area, and even volume. Because the app is so easy to navigate, one could easily choose any point of view of the object and use it in a lesson.
Other possible objective that applies to the older students:
By using the net feature on the application and writing on a screen shot of the nets, 6th graders can calculate surface area of simple solids or even complex solids.
Topic
Setting
Topic: Comparing 3-Dimensional Shapes

Setting: The best setting to use this tool is inside the classroom. If there are multiple Ipads available for the class, the students would work best in small groups, all actively participating with the application.
If there are not enough Ipads for the groups, the teacher could use the app on a Smart board or use one Ipad and put it on the projector.
Practical
Student Limitations and Affordances
The application is a great hands-on tool for students exploring shapes that the teacher might not have in his or her classroom. With that being said, it is only an application meaning that the shapes cannot pop out of the screen, giving students the opportunity to touch and feel the object. One way to overcome this challenge is for the teacher to use a real object to introduce the activity (that way students can have a real visual), and then the teacher can go more in depth with describing the shapes, such as recognizing different faces and verticies, with the Ipad application.
This tool is also a wonderful opportunity for students to have fun together in groups without creating a mess. Requiring no scissors, paper, or glue, this is a clean, clear tool.
By exploring so many different kinds of shapes, students are not limited to the basic shapes if this activity is not challenging enough for them. There are so many complex shapes on the app. However, if the teacher is not careful, this activity could go way over their brains, so that is something the teacher would have to keep in mind.
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