When a radical is not a perfect square (1, 4, 9, 16, …), estimating square roots is a valuable tool. When asked to estimate the value of a radical between two consecutive integers, find the two ...
Radical equations are equations that have square root terms. When solving radical equations, try to isolate the radical expression on one side of the equation and then square both sides (it is the inv ...
Who was Florence Nightingale? Watch this story, one of our 'British tales' videos about characters and people from British history, to find out!
Every great story has a strong foundation—the story structure. Structure helps storytellers answer the critical question: what do I want my audience to know and when?
In the newest Khan Academy ...
The CK-12 Physical Science for Middle School Workbook complements the CK-12 Physical Science for Middle School FlexBook® resource and includes six worksheets per lesson. Worksheets contain one of the ...
The CK-12 Earth Science for Middle School Workbook complements the CK-12 Earth Science for Middle School FlexBook® resource and includes six worksheets per lesson. Worksheets contain one of the follow ...
The CK-12 HS Earth Science Workbook complements the CK-12 HS Earth Science FlexBook® resource and includes six worksheets per lesson. Worksheets contain one of the following: multiple choice, T/F, voc ...
The CK-12 Biology Workbook complements the CK-12 Biology FlexBook® textbook and includes six worksheets per lesson. Each worksheet contains one of the following types of questions: multiple choice, T/ ...
The sum of two fractions with equal denominators is a new fraction with the same denominator and the numerator with the sum of the numerators. To subtract fractions we proceed in the same way: keep th ...
You'll learn the basic notions about the circumference.
At the end of the theorical explanation, you can practice or create 5 exercises to master this subject.
Definition and basic elements of a cir ...