Science · Stage 4
Investigate: Build a Branching Key
Pick smart yes/no questions, split the pile one step at a time, and record what your key finds.
✦ Science📘 Stage 4 · S4⏱ ~10 min🧒 Ages 8–9★ Free to start
I can measure with a tool and record my results in a table or bar chart.
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Kavi Builds a Key
Kavi tips a jar of garden minibeasts onto the table 🐝🐜🕷️🐌. "Too many to just guess! I'll build a branching key — one yes/no question at a time. Has wings? 🪽 splits them into two piles. Then I ask another question on each pile, and another, until only one name is left. At the end I'll record how many I found in a chart. Come on — let's build it!"
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What your child will learn
1What makes a GOOD key questionA branching key is only as good as its questions. Tap each clue to learn what a good key question does.
2Your first branch: has wings?The first question in our key is "Has wings?" Sort each minibeast into Yes or No — that builds the first branch.
3How to build a branching keyA key is built one step at a time, not all at once. Tap each step to see how you grow the branches.
4Record what your key foundAfter the key sorts every minibeast, record how many landed in each group. A bar chart makes the groups easy to compare — a taller bar means more.
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A peek inside
Kavi starts a key for three animals: a 🦅 eagle, a 🐟 fish, and a 🐜 ant. What is a good FIRST yes/no question to split them?
A good key question asks about a feature you can see and splits the pile. "Has feathers?" puts the eagle on Yes and the fish and ant on No.
Try this at home: What two answers can a branching-key question have?
Ready to play and learn?
Start the free interactive lesson, or print the handout for screen-free play.
Part of Science · Stage 4 · S4 on KAVI Academy — a secular, whole-child learning platform for ages 5–12.