Semester 2 Math
What Did We Learn?
Prime and Composite Numbers
Prime Factorization
Square Roots and Irrational Numbers
Square Root- a number multiplied by itself to get a product.
Irrational Number- A real number that cannot be expressed as a fraction because the decimal goes on forever with no repetition.
Quick Reminders
- Irrational numbers cannot be written as a/b
- Numbers such as 0.05 are called terminal numbers
How To Solve
To find a square root, you multiply a number by itself.
Ex: 3x3= 9
The square root of 9 is 3.
Recipe Project
Applications and Problem solving (In normal people words: Word Problems)
- Familiarize with the problem
- Translate
- Solve
- Check
- State answer
If Johnny had 7 apples but gave away 3, How many apples are left?
Step 1: Familiarize
If Johnny had 7 apples but gave away 3, How many apples are left?
Step 2: Translate
If Johnny had 7 apples but gave away 3, How many apples are left? = 7-3
Step 3: Solve
7-3=4
Step 4: Check
7-3=4
4+3=7
Step 5: State Answer
Johnny has 4 apples left.
Intro to Pythagorean Thm
This is the simple equation that begins your study of the Pythagorean thm.
We used these websites to help us with our studies:
http://www.shodor.org/interactivate/activities/PythagoreanExplorer/
There are many interesting interactive activities, instructions, and practice problems on these sights.
Dimensional Analysis
Dimensional analysis is the process of analyzing units to decide which conversion factor to use.
How to convert units:
Step 1:
What units of measurement do I want to know/ have in answer?
Step 2:
What do I know?
Step 3:
What do I need to know?
Step 4:
Solve (canceling units first)
Below in the picture is an example