Following Directions Lesson - Weber School Districtblog.wsd.net/juthorngren/files/2011/06/Following... · · 2011-08-03Mr. Davis Agriscience Elba High School ... to write with.

Following Directions Lesson

Mr. Davis

Agriscience

Elba High School

Take out a

clean sheet of

notebook paper

and something

to write with.

Place it in front

of you on your

desk.


Fold your

paper in half

long ways “hot

dog style”.


Open your paper up

and place it holes to

the top on your desk.

Draw a line all the

way down the crease

on the paper.

“DO NOT WRITE

ON THE DESK!!”


Fold the paper in half the other way “hamburger style”.

You can see my line because I used a Sharpie Marker and it bled through the paper.


Open the paper up

with the holes to the

top.

Draw a line from

the center of the

paper to the margin

closest to you.


Fold the paper like

you had it last

“hamburger style”.

Then fold it over

again in the same

direction as you

folded it last.


Open the paper up.

Draw a line on each of the creases half way to the bottom margin.

Then fold your paper back up like you last had it.


Fold the paper

over one more

time in the same

direction as your

last fold, making

it even more

slender.


Open the paper

up.

Draw lines on

the four creases

half as long as

the last lines you

drew, or ¼ of

the way to the

bottom margin.


Draw small lines on our paper in between each of the lines already on your paper and the left and right edges.

Make the lines extend down and be half as long as the last lines drawn.


Next, draw lines on

the left and right

edges all the way

down below the

margin, half way

between the margin

and the bottom of the

paper.

And in case you

haven‟t already

figured it out, we are

making a ruler.


Now all you

have to do is

count the lines

as you go from

left to right.

Reading a Ruler

0

1 2

3

4

5 6

7

8

9 10

11

12

13 14

15

16

By counting

you realize that

you have 16

equal parts to

an inch.

Next you show

each number as

a fraction or

portion of the

total number

16.

Reading A Ruler

0

1/16

2/16

3/16

4/16

5/16

6/16

7/16

8/16

9/16

10/16

11/16

12/16

13/16

14/16

15/16

16/16

Next, you must remember from math that a fraction

should always be expressed in lowest possible terms.

1/16 for example is in its lowest form, it cannot be

reduced any farther.

2/16 however, can be reduced.

2 is the numerator (top number in a fraction)

16 is the denominator (bottom number in a fraction)

Reading A Ruler

2/16 can be reduced by 2. This means that both 2

and 16 are divisible by 2.

2 divided by 2 = 1

16 divided by 2 = 8

Therefore our reduced fraction will be 1/8.

Reading A Ruler

Now lets take 3/16, will it reduce?

I bet that someone said yes!

Some people look at the three as the numerator

and the six in the sixteen (denominator) and

automatically think that this fraction will reduce.

However, it will not reduce.

3/16 is already in its lowest terms.

Reading A Ruler

Next, lets look at 4/16. Yes it will reduce. There

are two ways to reduce fractions like this one. If

you‟re a math wiz, you might say that 4 will go into

16. If you do, you are right. You can divide the

numerator into the denominator. This is the

quickest of the two ways, but you can divided both

the numerator and the denominator by 2, twice.

You have to be careful to get fractions like this one

into lowest possible terms.

Reading A Ruler

The easiest way to deal with 4/16:

4 divided by 4 = 1

16 divided by 4 = 4

Your reduced fraction is ¼.

Reading A Ruler

The other way to deal with 4/16 is:

4 divided by 2 = 2

16 divided by 2 = 8

Your fraction is 2/8, but is it reduced to lowest

possible terms? NO, you have to reduce again.

2 divided by 2 = 1

8 divided by 2 = 4

Your reduced fraction is 1/4

Reading A Ruler

Now that you know how to reduce these fractions,

you finish reducing the rest of the fractions on your

ruler.

Reading A Ruler

Reading A Ruler

Now Check

your fractions

against these

correct

answers.

0

1/16

1/8

3/16

1/4

5/16

3/8

7/16

1/2

9/16

5/8

11/16

3/4

13/16

7/8

15/16

1

Now that you

know how to use a

ruler, here are

some short cuts

for you.

As you have

noticed, the lines

are different

lengths on the

ruler.

As we go across

one more time pay

attention to the

line length and the

denominator

associated with it.

Reading A Ruler

0

1/16

1/8

3/16

1/4

5/16

3/8

7/16

1/2

9/16

5/8

11/16

3/4

13/16

7/8

15/16

1

Did you notice

a trend?

The longest

lines were of

course whole

numbers.

Reading A Ruler

0 1

The second

longest line is

1/2.

Reading A Ruler

The third

longest line has

a denominator

of 4.

1/4

1/2

3/4

The fourth

longest lines

always have a

denominator of

8.

Reading A Ruler

The shortest

lines always

have a

denominator of

16.

1/16

1/8

3/16 5/16

3/8

7/16 9/16

5/8

11/16 13/16

7/8

15/16

Reading A Ruler Now let‟s look at

the whole ruler. Can you tell me what would be the correct measurement for the letter A.

The answer is 5-7/16.

You start at the whole number and you add the calculated fraction to the whole number to give the correct distance.

5

A

6

Reading A Ruler What is the correct

measurement for the letter A.


What is the correct measurement for the letter B.


What is the correct measurement for the letter C.


10

A

11

B C

Now you know how to read a ruler and deal with the

fractions involved.

But these are measurements, and have to be expressed as

measurements. Write the following notes on your paper.

This standard ruler is to be expressed in inches or in. or “.

Example: 1 ½”

12 inches is equal to 1 foot or ft. or „. Example 4‟ 1 ½”

Three feet is equal to 1 yard or yd.

15/16

Reading A Ruler

Reading A Ruler

See if you can tell the measurements of the

objects on the following screens for a quick

quiz.

On the back of your paper title it

Measurement Quiz and number from 1 to 5.

Measurement Quiz

1.

Measurement Quiz

2.

Measurement Quiz

3.

Measurement Quiz

4.

5.

Measurement Quiz

Measurement Quiz Answers

The answers to the quiz are:

1. 6 - 7/16”

2. 3 – 11/16”

3. 5 – 5/8”

4. 4 – 7/8”

5. 11 – 9/16”

Following Directions Lesson - Weber School Districtblog.wsd.net/juthorngren/files/2011/06/Following... · · 2011-08-03Mr. Davis Agriscience Elba High School ... to write with.

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