# 8th Grade

## Khan Academy – Algebra I, Exponential Growth and Decay

Solutions to Wed/3/25 Textbook problems, Page 304-305

Please peruse each of the solutions so that your understanding grows exponentially

Please click on the link

Solutions 1 – 7; Solutions 8 – 10; Solutions 11 – 12; Solution 13; Solution 14; Solution 15; Solutions 16-17; Solution 22

**Assignment**: Khan Academy – Algebra I – Exponential Growth and Decay

I have assigned 3 sections from the Algebra I unit Exponential Growth and Decay. You will find the assignments by logging into our Khan classroom

**Graphs of Exponential Growth**

2 videos + 1 practice set

**Exponential vs Linear Growth over Time**

1 video + 1 practice set

**Exponential Growth and Decay**

2 videos + 3 practice sets

**Due Date**: Friday/March 27/high noon

# 7th Grade

## Jumping into Chapter 7 – Volumes of Solids

## Volumes of Prisms 7.1

**Goal**: I can find the volume of a prism and solve problems by using the formula for the volume of a prism

**Learning Tool**: Big Ideas textbook

**Introduction into Volume**

Here’s one way to think of volume: containers

We all know that volume has something to do with (width) x (length) x (height): cubes

But now we’re going to look at volume in a different way beginning with this warm-up problem: Pearls

I hope some of you have attempted an educated guess at the worth of the chest full of pearls. Nonetheless, here is our strategy and 1st way of estimating the worth of the chest: strategy

But, there is also a second way to look at this problem. And this method is our introduction into Chapter 7 – Volume: Method 2

So, we are actually visualizing volume as a filling process, and it can be found by stacking layers: Quick Synopsis of 2nd Method

**Textbook Notes, page 300**

Turn to page 300 of your Big Ideas textbook and click on the following link at the same time: Key Idea

Hopefully you can now see how the formula for the volume of a prism is related to our view that volume is a filling process. You start with a base and you add layers to your base (height)

But we need to be careful because we need to recognize what is the base of our prism and consequently what value is our height: prisms

Here is a link for Example 1 in your textbook on page 300: volume of a rectangular prism

I hope you see how the two expressions for volume of a rectangular prism, L x W x H and B x h, are connected.

Take a gander at Example 2 on the same page. Be careful because our first instinct is to see the height of the prism as 2 inches. But, it is not. So, please click on the following link and watch how I identify the base and height: triangular prism

Example 3 on page 301 is a real-world problem. Remember, a movie theater wants to make money. And one way to make more money is to reduce your costs. This is a great example that brings together the ideas of surface area and volume.

**Assignment**: Textbook, page 302, 1 – 13 ALL

**Due Date**: Friday/March 27/high noon