Class Notes: Introduction to Fractions

Objective

• Understand the basic concept of fractions and recognize fractions in visual examples.

Key Concepts

What is a Fraction?

• A fraction represents a part of a whole.
• It is written as one number over another, separated by a line (e.g., 1/2).

Visual Examples

1. Dividing a Circle into Two Parts

   • Whole circle is split into 2 parts.
   • 1 out of 2 parts is shaded.
   • Fraction Shaded: 1/2

2. Dividing a Circle into Four Parts

   • Whole circle is split into 4 parts.
   • 1 out of 4 parts is shaded.
   • Fraction Shaded: 1/4

3. Circle Divided into Eight Parts

   • Whole circle is split into 8 parts.
   • 3 out of 8 parts are shaded.
   • Fraction Shaded: 3/8

4. Rectangle Divided into Five Parts

   • Rectangle is split into 5 parts.
   • 2 out of 5 parts are shaded.
   • Fraction Shaded: 2/5

Summary

• A fraction = number of shaded parts / total number of parts
• Fractions help us express parts of a whole clearly.

Additional Resources

• For more lessons on fractions, search for "fractions organic chemistry tutor" on YouTube for extra videos and explanations.