By Kelly Boushell

Submitted June 5th, 2010

Dr. Sims

ITC 525 Computers for Educators

A REVIEW OF BASIC CONCEPTS

BEGIN

Table of Contents

“Choose one of the topics above to begin.”

“When you are ready to begin another topic

click on me at the bottom of the screen to

come back to the table of contents.”

Points

Line Segments

Lines

Rays Angles

Citations Standards

POINT

A point is a location in space.

Capital letters are used to name points.

A K G

M

More info here!

Table of Contents

Watch movie!

LINE SEGMENT

A line segment is made up of 2 points and

the straight path between them.

N D

The two points at the ends of a line

segment are called endpoints.

This line segment

is called:

ND or DN

Table of Contents

More info here!

Quiz Me!

Quiz Me!

1. What is the name of

this geometric figure?

B. Line Segment

A. Line

C. Ray

M E

Table of Contents

BACK

Try Again

What is the name of this

geometric figure?

B. Line Segment

A. Line

C. Ray

M E

Table of Contents

Need a little help? BACK

Fabulous!

What is the name of this

geometric figure?

B. Line Segment

M E You remembered a line

segment is made up of 2

points and the straight

path between them!

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LINE

A line is a straight path that goes on

forever in both directions.

J R

The arrowheads symbolize the line continuing forever,

even though it looks like it stops at the arrowheads.

This line is

called:

RJ or JR

R and J are

points, not end

points!

Table of Contents

More info here!

Quiz Me!

Quiz Me!

What is the name of this

geometric figure?

A. Line

B. Line Segment

C. Ray

Table of Contents

H

Z BACK

Try Again

What is the name of this

geometric figure?

A. Line

B. Line Segment

C. Ray

Table of Contents

H

Z Need a little help?

BACK

Superb!

What is the name of this

geometric figure?

A. Line

Table of Contents

H

Z You remembered a line is

a straight path that goes

on forever in both

directions!

RAY

A ray is a straight path that has a starting point

and goes on forever in one direction.

B

W This is point B

This is endpoint W

This ray is called:

WB

Note the difference between

point and endpoint!

The endpoint is always the first

letter in the name of a ray!

Table of Contents

More info here!

Quiz Me!

Quiz Me!

3. What is the name of

this ray?

D

O

A. OD

C. DO

B. OD

Table of Contents

BACK

Try Again

3. What is the name of

this ray?

D

O

A. OD

C. DO

B. OD

Table of Contents

Need a little help? BACK

Fantastic!

3. What is the name of

this ray?

D

O

A. OD

You remembered that the endpoint is

always the first letter in the name of a

ray!

Table of Contents

ANGLE

NEXT

An angle is formed by 2 rays or 2 line segments that

share the same endpoint.

The endpoint where the rays or

segments meet is called the

vertex of the angle.

The rays or segments

are called the sides of

the angle.

Table of Contents

More info here!

Naming Angles

NEXT

The vertex of the angle must always be

in the middle of the, between the points

on the sides. A

B C

This angle is called:

ABC

The vertex point is

B. That is why B is

in the middle of the

sides A and C.

CBA

or

Table of Contents

BACK

Classifying Angles

Table of Contents

More info here!

Quiz Me!

Watch movie!

Straight Angle

Measures exactly

180

Acute Angle

Measures between

0 and 90

Reflex Angle

Measures between

180 and 360

Obtuse Angle

Measures between

90 and 180

Right Angle

Measures exactly

90

BACK

Quiz Me!

Table of Contents

4. What is the classification

of this angle?

A. Acute Angle

B. Reflex Angle

C. Obtuse Angle

BACK

Try Again

Table of Contents

4. What is the classification

of this angle?

A. Acute Angle

B. Reflex Angle

C. Obtuse Angle Need a little help?

BACK

Awesome!

Table of Contents

4. What is the classification

of this angle?

C. Obtuse Angle You remembered that

an obtuse angle

measures between 90

and 180 !

Citations

Bell, M. (2002). Everyday mathematics student reference book. Chicago: McGraw-Hill.

Bell, M. (2002). Everyday mathematics teacher lesson guide. Chicago: McGraw-Hill.

Eather, J. (2001). A maths dictionary for kids. Retrieved on June 3, 2010 from http://www.amathsdictionaryforkids.com/

Pennsylvania department of education. (2009). Academic standards for mathematics. Retrieved on June 3, 2010 from http://www.pdesas.org/main/fileview/Academic_Standards_for_Mathematics_(Elementary).pdf

Weatherall, P. (2009). Angles music video [YouTube Video]. Retrieved on June 3, 2010 from http://www.youtube.com/watch?v=yptZt9hwrzU&feature=related

YourTutorOnline. (2009). Points and lines [YouTube Video]. Retrieved on June 3, 2010 from http://www.youtube.com/watch?v=AJEjpy7AmBU

Zahn, C. (n.d.) You are here' sign/ man getting squashed by an 'x‘. Retrieved on June 3, 2010 from http://www.cartoonstock.com/lowres/cza0219l.jpg

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