DO NOW

1. Copy the objective on page 8L.

2. Complete the following on your index card:

Write in your own words, a description of where in the room your seat is. Do not draw, use only words.

Do not include any people in your description, because it should work no matter who is in the room.

Turn your cards in to the teacher.

AGENDA

1. Do Now

2. Find A Seat!

3. What makes a good description?

4. Exit slip

How can we tell if an object is in motion?

8R

How can we tell if an object is in motion?

• First we have to describe its position!

• Position – an object’s place or location

FIND A SEAT!

??

??

????

?

When you get your new card:

1. Silently read it to yourself

2. Try to figure out whose card you have

Find A Seata.b.

8L

a) Was it easy or hard to figure out the location of the seat?

b) Explain why. You may use one of the following sentence starters:•This was a good description because it had…

Or•This was a poor description because it was missing…

One student at a time, share description.

Everyone else, QUIET PLEASE!

Most of the good descriptions that we just read used something

called a reference point to help describe their location. Today you are going to learn how reference points can help you describe an object’s position, as well as give directions from one position to

another.

8R

Position – an object’s place or location

• Easy to describe if there is an object or a marker around!

• Reference point – a marker that helps describe an object’s position

• Good reference points are stationary or not movable

Think-Pair-Share: Why do you think it’s important to have a stationary reference point?

Check for Understanding: What is the best reference point to describe the

position of the man?

• Reference points are also necessary because they can help you determine if an object is moving.

• Reference points are also necessary because they can help you determine if an object is moving.

When describing an object’s position, you need to include 2 things:

• Distance from the reference point (you may have to estimate)

• Direction from the reference point (left, right, above, below)

Check for Understanding: Describe the position of the bike.

10 m

5 m

Rewrite your description of the location of your desk on the back of the index card

you now have.

• Once again, do NOT put your name on the index card or use the names of anyone else in the classroom. Your description of your seat location should still be valid even if there are no students in the room.

• Remember to choose a reference point and to include the distance and direction from that reference point

Why was it easier to figure out which card belonged to each

person this time?

Independent Practice – page 8L

• Write descriptions of the position of 5 objects within this classroom. For each one include at least 1 stationary reference point, as well as the distance from reference point (estimate) and direction from reference point.

• At the bottom of the page, make an answer key (upside down). If you and a classmate finish early, trade notebooks and see if you can figure out which objects they are referring to.

HOMEWORK

Reference Point

Definition:

Good reference points:

Bad reference points:

Good reference points are _______________________

HOMEWORK

Reference Point

Definition:

Good reference points: Bad reference points:

Good reference points are ____________

_________________________________

_________________________________

_________________________________