Lesson 2 Find Volume Using Unit Cubes

The volume of a unit cube

• square unit

• face

• area

• cubic unit

Answer explanation

When something is "cubed" it means it has 3 dimensions...unit cubes measure 3 dimensional figures.

Tags

TEKS.MATH.5.6A

A two-dimensional figure.

• solid figure

• plane figure

• unit cube

• square unit

Answer explanation

Think of the Great Plains...they are flat with no mountains or hills. 2 dimensional figures are flat, they only have length and width...they have no height.

Tags

TEKS.MATH.1.6B

A cube with side lengths of 1 unit. It has 1 cubic unit of volume, and can be used to measure the volume of a solid figure.

• square unit

• volume

• area

• unit cube

Answer explanation

Solid figures have 3 dimensions, so in order to be able to measure a solid figure, you need to use something, like a cube that also has 3 dimensions.

Tags

TEKS.MATH.5.6A

A square with side lengths of 1 unit. It has 1 square unit of area and can be used to measure the area of a plane figure.

• area

• unit square

• unit cube

• volume

Answer explanation

Remember, if something is squared, it has 2 dimensions. So to measure area, you need to have a flat unit, like a square.

The amount of space inside a solid figure. It is measured in cubic units, like cubic inches.

• volume

• unit cube

• area

• unit square

Answer explanation

A chocolate bar has volume. It is a solid figure filled with mouth watering chocolate.

Tags

TEKS.MATH.5.6A

The amount of space inside a closed two-dimensional figure. It is measure in square units, such as square centimeters.

• plane figure

• volume

• area

• solid figure

Answer explanation

Area covers something. It is flat (2-dimensional). Think about putting a carpet over a floor.

A flat surface of a solid shape

• ray

• face

• edge

• line segment

Answer explanation

Think Face...Flat

Ffff....Fffff

A solid figure with six rectangular faces

• rectangular pyramid

• rectangular prism

• hexagonal prism

• cube

Answer explanation

Prisms are named based on the shape of the face. If the face of the prism is a rectangle, it is called a rectangular prism.

Tags

TEKS.MATH.1.6E

The area of a unit square

• volume

• square unit

• cubic unit

• face

Answer explanation

Remember...area is always squared because it has 2 dimensions.