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Course Description: Students will work through basic operations with integers, fractions and decimals. Students will progress through the study of number properties as well proportions, rates, exponents and radicals.
DIRECTIONS: This is an ordered list of 139 videos and exercises (with links) to complete Khan Academy arithmetic and pre-algebra. (This is the same course that it was before Khan Academy aligned with Common Core. I was able to update Khan Academy’s links without changing the teaching. Where they have eliminated exercises, I just found alternatives on other sites.) You will start at the top of the page with Addition and Subtraction and work your way down in order. Make sure you read the directions every time. The first link on each line is to the video, unless marked differently. You can move on to the exercise as soon as you know the material. That means you can do the exercise without watching the video if you already know how to do it. At some point, you should probably be watching all of the videos. When you do, write the problems down and work through them with the teacher to help you stay focused and to make sure you can do it too. Some days you will be doing more than one exercise. Some days you won’t make it through one whole exercise. You will stay on an exercise until you are proficient. (According to Khan Academy that’s the first one correct or five correct in a row. I suggest getting the first one wrong on purpose!) You should be able to do five in a row correct before you move on. One suggestion is to set aside 20 – 30 minutes for math each day. When you stop in the middle of an exercise, it should remember how many problems you’ve done.
Make sure you make an account at Khan Academy and log in! (If you plan to use Khan Academy’s built-in tracking, please understand that Easy Peasy is not following entire courses built by Khan Academy; therefore, it may not show “mastery” in the records.)
Addition and Subtraction with Positive and Negative Numbers
- If you didn’t get here through My EP Assignments, I suggest you go there and create an account. There is an offline version of this course if you are interested in a workbook. Scroll up for the link.
- Read the directions for this course.
- Basic Addition (You don’t need to watch this if you can add 2 + 2.)
- Complete the exercise.
- Subtraction 3: Introduction to Borrowing or Regrouping
- Complete the exercise. You don’t have to finish the whole exercise before moving onto #7.
- Complete the exercise “Addition and Subtraction Word Problems .”
- If this site is giving you problems, making a free account seems to fix that.
- Complete the exercise “Negative Number Word Problems.”
Multiplication and Division with Positive and Negative Numbers
- Answer the addition and subtraction word problems. (review)
- Commutative Law of Addition and Commutative Law of Multiplication
- Explain and demonstrate the commutative law to a younger sibling (or someone else) using toys. (If I give you one car and one plane, you have a car and a plane. If I give you one plane and one car… If I give you a toy car two times, you have… If I give you two toy cars one time, you have…)
- Complete the exercise “Comparing Absolute Values.”
- Why Dividing by Zero is Undefined and Why Zero Divided by Zero is Undefined/Indeterminate and Undefined and Indeterminate
- Explain this concept to your parent or homeschool teacher.
- Answer the multiplication and division word problems. (review)
Factors and Multiples
- Prime Numbers
- Read my notes below.
- A prime number can’t be divided evenly (no remainder) by any number except itself and the number 1. Example: 7/7=1, 7/1=7 You can’t divide 7 evenly by any number other than itself and 1.
- If it is even, then you can divide it by 2.
- If it ends in 5 or 0, then you can divide it by 5.
- If you can add up the digits and divide the sum by 3 or 9, then you can divide the whole number by 3 or 9. For example 69: 6 + 9 = 15. You can divide 15 by 3, so you can divide 69 by 3.
- Complete the “LCM and GCD word problems..” Pause the video. Read the problem and solve. Then watch the solution. Repeat for each problem.
- Read about finding the least common multiple and answer the questions.
- Complete the exercise “Subtracting Fractions.”
- Complete the exercise, “Fraction Word Problems 1.”
- Complete the exercise “Fractions on a Number Line 1.”
- Complete the exercise “Fractions on a Number Line 2.”
- Complete the exercise “Fractions on a Number Line 3.”
- Dividing Mixed Numbers and Dividing Mixed Numbers and Fractions (This has some negative numbers. That’s just the same as dividing -4 by 2. The rules for multiplying and dividing negative numbers still apply even though they are mixed numbers instead of whole numbers.)
- Solve: 2 and 4/9 divided by 1 and 1/8. Convert the mixed numbers to improper fractions. Then multiply the first by the reciprocal of the second.
Fractions, Decimals and Percents
- Complete the exercise “Adding Decimals.”
- Complete the exercise “Adding Decimals 2.”
- Complete the exercise “Subtracting Decimals.”
- Complete the ratio word problems.
- Remember that you are supposed to work on each lesson until you are proficient, until you get it. Don’t move on if you are stuck. Give it another try the next day.
- Take a notepad to the grocery store. Write the price and unit price as well as the measurements (e.g., 4 ounces) for five different products. You’ll find the info on the tag. The unit price is written small. At home, see if you can take the product price and come up with the same unit price as the store.
- Measure something in centimeters and inches. Write them as a proportion.
- Measure something just in inches and use the proportion to figure out what the measurement is in centimeters.
- Now measure it in centimeters and see if you were right. If you don’t know what U.S. Customary and Metric units are, then watch this.
- Converting Gallons to quarts pints and cups
- Make a chart for gallons, quarts, pints, and cups that shows how many are in each other.
- Converting pounds to ounces
- Find out how much you weighed when you were born. Figure out how much you weighed in ounces.
- Comparing Celsius and Fahrenheit temperature scales 0 (zero) degrees Celsius is the same temperature as 32 degrees Fahrenheit. 100 degrees Celsius is the same temperature as 212 degrees Fahrenheit.
- Can you figure out how to get from one to the other? After you’ve thought about it, find the formula online or on the video. Plug in 0 and 100 and see if you get 32 and 212.
- Converting Farenheit to Celsius
- Take today’s temperature in Fahrenheit and figure out today’s temperature in Celsius.
SUMMER SCHOOL – Make sure you know those facts! Use flashcards, our facts practice workbooks, or online games and programs like xtramath.