# 8th Grade

## Geometric Sequences 6.7

**Big Ideas Algebra textbook**

*We will end Chapter 6 (Exponential Equations and Functions) with the geometric sequence because some geometric sequences behave like exponential functions. *

**Solutions to Wednesday, April 1 assignment**: click on the link

**Learning Tool**: Big Ideas textbook

**Goal**: I can write an equation for the nth term of a geometric sequence by using the first term and the common ratio and noticing that to find the nth term we would use the common factor n -1 times

**Notes**: click on the link

(You can follow along in your Big Ideas Algebra textbook beginning on page 308 . You can also view the videos from Khan Academy’s Algebra I course in the unit entitled Sequences, and beginning with the section “Intro to Geometric Sequences)

Extending a geometric sequence

*You add a number to extend arithmetic sequences and you multiply by a number to extend geometric sequences*

Examples of extending geometric sequences

Examples of using geometric sequence formulas

Writing an exponential function that describes a geometric sequence: writing an explicit formula

Connecting the arithmetic sequence and geometric sequence

**Assignment**: Big Ideas textbook, pages 310-311; #s 4 – 28 (all)

**Due Date**: Monday, April 6, high noon

# 7th Grade

**Volumes of Pyramids 7.3**

**Big Ideas textbook, Lesson 7.3**

**Solutions to Wednesday’s assignment, textbook, page 308-309** (please click on the link)

**Learning Tool**: Big Ideas textbook

**Goal**: I can find the volume of a pyramid by the using a formula

**Background Notes** (please click on the link)

Recall how to find the volume of any prism

*Here is the main idea of this lesson about finding the volume of any pyramid: the textbook tells us the volume of a pyramid is 1/3 (one-third) the volume of a prism with the same base and the same height of the pyramid.*

Here is the example of finding the volume of a pyramid by first finding the volume of a prism with the same base and same height: volume of pyramid = 1/3 of volume of prism

**Textbook Notes** (page 312 of our textbook)

**Assignment**: Big Ideas textbook, page 314-315, #s 1 -15

**Due Date**: Monday, April 6, high noon