solidsallaround

Transcription

solidsallaround
Solids All Around
A Reading A–Z Math Book • Grade 2
Word Count: 564
Math Book • Grade 2
Solids All
Around
Written by Adria Klein
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Table of Contents
Rectangular Prisms . . . . . . . . . . . . 4
Senior Program Authors: Colleen Jones and Adria Klein
Photo Credits:
Page 22: © heckepics/iStock/Thinkstock;
all other photos: Tara Todras-Whitehill
Cubes . . . . . . . . . . . . . . . . . . . . . . . . 8
Copyright © 2016 Curriculum Concepts International
All rights reserved. No part of this work may be
reproduced, transmitted, or utilized in any form or
otherwise, or by any digital storage and retrieval
system, without prior written permission from
Curriculum Concepts International. Curriculum
Concepts International 80 Fifth Avenue, Suite 1503
New York, New York 10011 www.cciny.net
Spheres . . . . . . . . . . . . . . . . . . . . . . 12
Cylinders . . . . . . . . . . . . . . . . . . . . 16
Cones . . . . . . . . . . . . . . . . . . . . . . . 17
Correlation
Solids All Around
© Learning A−Z
Written by Adria Klein
All rights reserved.
www.readinga-z.com
Learning A–Z
Fountas & Pinnell
Reading Recovery
DRA
M
L
19
24
Square Pyramids . . . . . . . . . . . . . 20
2
Rectangular Prisms
This solid is a rectangular prism .
You can see three of
face
its faces . But there are
three more faces that
you can’t see . Every
face
rectangular prism has
face
six flat faces .
base
Ruben and his friends are learning
about solid figures all around them .
Solids All Around • Grade 2
3
base
4
The faces at the top
and bottom of this
prism are called
bases . Both bases
are the same size
and shape . The
bases are also
opposite each other .
edge
An edge is
where two
faces meet .
A rectangular
prism has
twelve edges .
How many
can you see?
Hardware Store
vertex
Issac looks for rectangular prisms in
the hardware store . He knows they have:
A vertex is where a
base and two faces
meet . The word
vertices is plural for vertex .
• six faces
• two bases that are opposite each other
A rectangular prism has eight
vertices . How many can you see?
Solids All Around • Grade 2
• twelve edges
• eight vertices
5
6
Cubes
How many rectangular prisms
do you see?
Solids All Around • Grade 2
A cube is another type of solid
that is also a rectangular prism .
It has six faces, eight vertices,
and twelve edges .
7
8
Toy Store
rectangular prism
cube
square
face
square
face
square
face
Tanya looks for cubes in the toy
store . She knows they have:
Look at the orange face on the
cube . It is a square . The blue and
yellow faces are also squares .
All six faces are squares with
equal edges all around .
Solids All Around • Grade 2
• six square faces
• eight vertices
• twelve equal edges
9
10
Spheres
How many cubes can you see?
This solid is a sphere . It has no flat
faces, edges, or vertices .
Solids All Around • Grade 2
11
12
Sports Shop
curved surface
Leara looks for spheres in the
sports shop . She knows they have:
• no faces, edges, or vertices
A sphere has a curved surface
and nothing else . All points on
a sphere’s curved surface are the
same distance from the center .
Solids All Around • Grade 2
• a curved surface
• surfaces on which all points are
the same distance from the center
13
14
Cylinders
How many spheres can you see?
This solid is a cylinder . It has two
faces . The faces are circles . No
matter how hard you look, you
will not find a single vertex on
a cylinder . Cylinders also have
curved surfaces .
circular face
curved surface
Solids All Around • Grade 2
15
16
House and Neighborhood
Cones
Ruben and Megan look for cylinders
and cones around their house and
neighborhood .
This solid is a cone . A cone
has only one face that is a circle .
They know cylinders have:
• two faces shaped like a circle
• no vertices
• curved surfaces
circular face
They know cones have:
• one face shaped like a circle
Solids All Around • Grade 2
17
18
Square Pyramids
How many cylinders and cones
do you see?
Solids All Around • Grade 2
This solid is a square pyramid .
It has four faces that are shaped
like triangles . They are connected
by four edges . It also has a face that
is shaped like a square . There is one
vertex on top of a square pyramid .
19
20
Around the World
When a square pyramid is turned
over, you can see four more vertices
on the bottom . There are five vertices
in all, including the one on top . It is
a square pyramid because the face
on the base is square .
edge
squ
f a c a re
e
vertices
vertices
top vertex
There are four more edges that
connect the triangular faces to the
base . Square pyramids have eight
edges in all .
edge
Here’s an amazing group of
square pyramids! You would
have to go to Giza, in Egypt,
to find them .
tri
an
g
fa u l a
ce r
Solids All Around • Grade 2
u la r
t r ia n g
fa ce
21
22
Draw lines to match each shape
to its name .
rectangular prism
cylinder
cone
square pyramid
sphere
Solids really are all around . Ruben
and his friends saw them in their
neighborhood and across the world .
Where can you find solids around you?
Solids All Around • Grade 2
23
cube
24