Net of Solid Figures
Day 3
Drill:
Bring Me!
The first pupil who will bring the thing that can be found inside their bag or in the classroom that represents the spatial figure that the teacher will say, will get 1 point. Those who will earn more points will be the winner.
Bring me a thing that represents a rectangular prism.
Bring me a thing that resembles a cylinder.
Bring me a thing that has one circular base and one curved face.
Review:
Guessing Game!
My base is a polygon and my faces are triangles. Who am I?
I am a spatial figure with a polygonal base whose edges meet at a common vertex. Who am I?
I am a spatial figure having a circular base and one vertex. Who am I?
I am a spatial figure with 2 parallel congruent faces called bases and the other faces are parallelograms. Who am I?
I am a spatial figure with 2 circular bases, no edge, and no vertex. Who am I?
Every morning, we take our breakfast to jumpstart our day. Breakfast is the first and most important meal of the day. People have different preferences for breakfast. Some prefer to have a light breakfast, while others want it heavy. One good example of a healthy breakfast is a bowl of cereals. All cereals are available in a similar box. What kind of solid figure is it? Have you tried unfolding cereal box?
Presentation
Let us unfold a cereal box.
Based on the illustration ( see the illustration on page 200), if we unfold the cereal box we will come up with a closed plane figure.
This two-dimensional figure is called a net.
(Discuss the content on page 202-205 of 21st century Mathletes)
Let’s watch a video : “3d Shape Nets for Kids”
Group Activity
Each group will make 2 different nets for the ff.
Group 1: Cube
Group 2: Square Prism
Group 3: Octagonal Prism
Group 4: cylinder
Group 5: Cone
(TG. page.80)
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ENERALIZATION
What is a net?
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ENERALIZATION
A net is a flat figure that can be folded to form a closed, three-dimensional object. Such an object is called a solid.
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ENERALIZATION
Differentiate the nets of pyramids, prisms, cones and cylinders from each other
Evaluation
Name each solid figure. Then, draw its net.
(See Mathletes Book page 206. Do evaluate.)
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Thank you for listening!
Dll ctto Maam Annalice Quinay
PPT Agustina Tan