Learners use pizza slices to understand what a fraction is and how fractions compare. Wondy the Globe hosts, and the lesson ends with a quick quiz so learners can check what they remember. Try pausing at each quiz question and letting your learner answer out loud.
What's in this lesson
- Halves, thirds and fourths
- Numerator and denominator
- Equal parts
- Comparing fractions
Practice after watching
Try our free Grade 3 fractions activity with six questions and answers. Fold paper into equal parts, identify the numerator and denominator, and check your understanding.
Watch the full Grades 3–5: Math, Science & Geography playlist
⭐ Subscribe to Wonder Squad Academy · Watch on YouTube
About this math lesson
A fraction names equal parts of a whole. This free 3rd grade video uses pizza slices to explain halves, thirds and fourths, what the top and bottom numbers mean, and how to compare unit fractions.
Key ideas
- The denominator (bottom number) tells how many equal parts make the whole
- The numerator (top number) tells how many parts we are counting
- 1/2 is bigger than 1/4: more parts means smaller pieces
- The parts must be equal for a fraction to be correct
Questions parents and teachers ask
How do you explain fractions to kids?
Cut a pizza or paper into equal parts. If there are 4 equal parts and you take 1, you have one fourth, written 1/4.
What is a numerator and denominator?
In 3/4, the numerator 3 is how many parts you have, and the denominator 4 is how many equal parts make the whole.
Which is bigger, 1/3 or 1/4?
1/3 is bigger. When the whole is the same size, cutting it into fewer parts makes each part bigger.
