Week 8 Day 1

Week 8 Day 1

Monday

Did you do IXL

first? Only

proceed when 15
minutes of IXL

has been
completed

Where is
Ms. Nolan?

She is at her
graduation
from ASU

and …

Spending
time with

her

Grandma

What are
we working

on this

week then?

You will be using
this interactive
format to learn
about area and

volume

But first…

What do you
call a blind
dinosaur?

A

do-you-think-he-saw-us

Now

entering

notes
section

I can identify the characteristics
of two-dimensional figures and
find the volume of rectangles,
triangles, and circles.

Learning Target

2D Shape Areas

2D shapes are shapes with two
dimensions, such as width and
height.

An example of a 2D shape is a
rectangle or a circle. 2D shapes
are flat and cannot be physically
held, because they have no depth;
a 2D shape is completely flat.

2D Shape Areas

The area of a figure is the number of unit squares

that cover the surface of a closed 2D shape

2D Shape Areas

When finding the area for two
dimensional shapes, we have
formulas that help us to find the
area. Depending on the shape
depends on which formula we use.

2D Shape Areas - Example

Using the formula for a
rectangle, we multiply
the length by the width.

3 * 3 = 9

2D Shape Areas - Example

Using the formula
for a triangle, it is a
little bit different.

6 squares

3 Squares

2D Shape Areas - Example

Notice how if we count all
the squares in the 6 by 3
space, the triangle is only
taking up half of that
space.

6 squares

3 Squares

2D Shape Areas - Example

Therefore, we only want
half of the space. We still
multiply the length by the
width, but since we only
want half of it, we must
also multiply by 1/2.

6 squares

3 Squares

2D Shape Areas - Example

Area is ½ multiplied by
base and height.

½*6*3 = 9

6 squares

3 Squares

2D Shape Areas

Triangle

Rectangle
A= L * H

IXL- SKILL PRACTICE

Rectangle and Triangle Area Practice