St. Giles School

St. Giles School

St. Giles School exists to foster the spiritual, intellectual, emotional, social, and physical growth of our elementary school children.

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e-Learning, Thursday, April 2, 2020

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

1 – 17

 

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)

What is a geometric sequence?

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

Geometric sequence formulas

Examples of using geometric sequence formulas

Writing recursive 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)

#12; #13; #14; #15;

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)

what is a pyramid?

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.

main idea

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)

Key Idea

Real-Life Application

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

Due Date: Monday, April 6, high noon

 

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