Please remember to follow the website daily. The website lists ALL due dates. Do NOT follow due dates in Delta Math

Math 8R

IMPORTANT CALCULATOR INFO

if you are in need of a scientific calculator, you may download one from Casio's website.

Scroll down to the choice below and choose fx-300ES from the drop-down as shown below. Click download and choose that you are a STUDENT from JUNIOR SECONDARY. Once you install the calculator, an icon should appear on the desktop. When you open you will be asked if you want to start your free trial. Click NO and the calculator should be good to go.

IMPORTANT INFO FOR Getting Started

IMPORTANT INFORMATION for Castle Learning and Delta Math

1. Castle Learning. Many of you already have logon information through other classes. Use this same information to access the math assignments. If you have any difficulty, contact your teacher for username or to reset your password.

2. Delta Math. The class code for Delta Math is 816786 (Ms. Devine is the host for Delta Math so everyone will see her name.) You will enter this code when you "Create Account." Please be sure to select the correct class (Devine: Period 6D; Chierichella Period 5C, 6C, or 8C; Urbancik: Period 8U; Kroczynski/Francois: Period 1K, 3K, or 5K) When entering your personal information, it is important that you enteryour FULL first and last name. Any issues, please contact your teacher.

Many of you have expressed issues with the web page loading. Weeks 1-8 can be located by choosing the drop-down from this 8R page. Weeks 9-12 continue below.

At this point in time, you should have completed the following assignments:

Delta Math:

Monomials 1
Polynomials 1, 2, 3, 4 and 5
Real & Pythag 1 and 2

Google Forms:

Unit 9 Quiz and Test
Unit 10 Test

Be sure they are all complete by the end of the quarter.

Upcoming Assignments

Delta Math:

Real & Pythag 3

Google Form:

Unit 11 Test

Distance Lessons Week 9 (5/25-5/29)

8R Distance Learning Week 9

M 5/25 OFF

T 5/26 11.3 More Simplifying Radicals

A) Copy class notes into notebook (See Additional Notes below)

B) Answer homework questions and check answers.

C) Check out the videos below for more information

Remember to Email us with any questions!

11.3 CW

11.3 HW

Additional Notes.

The only difference between today and Friday is that today we begin with a coefficient. It is attached to the radical symbol by multiplication. Since the coefficient is OUTSIDE the symbol, you do not take its square root. When you simplify the radicand inside and bring a number out, those two numbers will now multiply together, like in the example to the right.

11.3 Suggested videos

How To Simplify Radicals

3:42 - 5:02 for specific examples. If you watch from 6:40 to the end, you will see multiple simplifications in each problem.

Learn how to simplify a radical

How to Simplify Radicals (NancyPi)

W 5/27 Simplifying Radicals Review

A) Work on the Additional Ditto to the right. PAGES 1 AND 3 ONLY

(If you can print it, then do so. If not, just do the problems in your notebook.)

B) Check answers.

C) Rewatch the videos above for more information

Remember to Email us with any questions!

A.3 Simplifying Radicals HW.pdf

Th 5/28 11.4 Intro to Pythagorean Theorem

A) Copy class notes into notebook (See Additional Notes below)

B) Answer homework questions and check answers.

C) Check out the videos below for more information

Remember to Email us with any questions!

11.4 CW

11.4 HW

Additional Notes.

The Pythagorean Theorem is a rule that applies to right triangles. The Legs are the sides that come together at the right angle. The Hypotenuse is the side across from the right angle, and is always the largest side.

To answer problems, it is helpful to determine C (the Hypotenuse) first. Then the other two sides, the legs go in place of A and B in no special order:

In the first example, the Hypotenuse is x, so it goes in place of C. Then the legs of 6 and 8 go in either order. To simplify, first remove the exponents by squaring the numbers. Here x is already isolated so we can add 36 and 64. To solve for x, we do the inverse of square, which is square root. SHOW THE SQUARE ROOT TO EACH SIDE.
In the second example, 13 is the hypotenuse since it is across from the right angle. When we plug in and simplify exponents, you can see that y is not alone. Begin by subtracting 144 to each side. Then we can take the square root to answer the problem.

11.4 Suggested videos

The Pythagorean Theorem

*Skip the "Proof using similar triangles" page

Intro to the Pythagorean theorem (video) | Khan AcademySal introduces the famous and super important Pythagorean theorem!

Example: Determine the Length of the Hypotenuse of a Right Triangle

F 5/29 11.5 Finding Missing Sides

A) Copy class notes into notebook (See Additional Notes below)

B) Answer homework questions and check answers.

C) Check out the videos below for more information

Remember to Email us with any questions!

11.5 CW

11.5 HW

Additional Notes.

The only difference between today's lesson and yesterday's is that our answers will not be "pretty" today. The radicands are not perfect squares, and therefore must be expressed as a decimal (use your calculator) or simplified. The problem will tell you which way to express your answer. Refer back to the videos and work from yesterday on how to solve for the missing side.

11.5 Suggested videos

The Pythagorean Theorem

*Skip the "Proof using similar triangles" page

Example: Determine the Length of the Leg of a Right Triangle

Example: Determine the Length of the Hypotenuse of a Right Triangle

Distance Lessons Week 10 (6/1-6/5)

Math 8R Comment Section

Math 8R Comment Section (Responses)

8R Distance Learning Week 10

M 6/1 Pythagorean Theorem Practice

Today you will continue practicing rules.

Log into Delta Math and complete assignment "8RDL Real and Pythag 3"

T 6/2 11.6 Converse of Pythag

A) Copy class notes into notebook (See Additional Notes below)

B) Answer homework questions and check answers.

C) Check out the videos below for more information

Remember to Email us with any questions!

11.6 CW

11.6 HW

Additional Notes.

We use the Pythagorean Theorem to find missing sides of right triangles because it only works in right triangles. The converse says means we are going in the opposite direction. We have all 3 sides but do not know if the triangle is a right triangle. To determine this, we plug the sides into the Pythagorean Theorem. It is works, it is a right triangle. It it doesn't then it is not a right triangle. Simple as that. Just remember that the longest side is always C. In the case of radicals, you may have to use the calculator first to find out which number is truly larger.

11.6 Suggested videos

Example: Determine if a Triangle is a Right Triangle Given the Length of 3 Sides

Converse of the Pythagorean Theorem

First 1:45

Math Antics - The Pythagorean Theorem

W 6/3 11.7 A Pythag Word Problems

**CLASSWORK DITTO ONLY

A) Answer classwork questions

B) Check answers.

C) Check out the videos below for more information

Remember to Email us with any questions!

11.7 CW

Additional Notes.

When solving Pythagorean Theorem word problems, you MUST sketch a picture. In many instances, just drawing a right triangle will not be any help. You need to put as much detail as possible into your picture. In the example to the right, someone is standing on a wall so a ladder is put in place to help them. Notice how the author started with the person on the wall (the Vertical side of the right triangle.) When the ladder is drawn, notice how it is leaning against the wall. All ladders lean!!! The 5 goes on the bottom because it says the ladder is 5 meters from the wall. Many times the problem will say the "base of the latter is 5 meters from the base of the wall." Base is always on the bottom.

This is still math class, not art class. Be sure there is enough detail in your picture to help you, but don't take 2 hours to draw 1 picture. Do your best to get the job done.

**Always remember to go back and read the problem. Many times there is another step like on the butterfly problem from the 11.5 HW. In that case, the problem asked for the entire wingspan, so you had to double your answer.