A Lot or a Little?
What you will—and won't—find in this app.
Kids can learn the names and characteristics of nearly 50 3-D solids with this well-designed reference tool. Kids can explore a 3-D image of each polyhedron and place points to create a cross section. For each solid, an info sheet lists features including number of sides and vertices as well as formulas for calculations such as surface area. Shape names like octahedron or a pentagonal hexecontahedron offer kids a great opportunity to brush up on their Greek prefixes and root words. iCrosss is a useful tool to help kids visualize complex geometric forms but offers little opportunity for them to apply the concepts.
Ease of Play
iCrosss has an intuitive interface that makes exploring the nearly 50 three-dimensional polyhedrons a fun, interactive experience. Tap the question mark in the top right corner for a walk-through text tutorial on all the app's features.
Parents Need to Know
Parents need to know that iCrosss is an interactive encyclopedia of polyhedrons -- three-dimensional solids kids often study in geometry class, which include cubes, pyramids, and prisms. Kids can explore 3-D representations of nearly 50 different polyhedrons and can experiment with creating cross-sections. Kids can also access info on each polyhedron including the number of vertices, edges, and faces as well as formulas for surface area, volume, face diagonal, and more.
Is It Any Good?
ICROSSS is a very cool tool for exploring and studying polyhedrons. The 3-D representations are accurate, and the interactive animations are fun to manipulate. Kids can choose from a list of solids comprehensive enough to serve as a reference tool for students in middle school through college.
As slick as it is, iCrosss is nothing more than an interactive reference tool. Kids aren't encouraged to do calculations or play with the math in any deep way. It would be a great addition to the app if there were opportunities or suggestions to extend the learning –- printable templates for constructing paper models of the polyhedrons is one idea.
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