Egypt Primary 3 Discover (Science and Social Studies), Week 1: Clues, puzzles and riddles

Life skills, clues and data

Week 1 · Axis 1 Who Am I? Chapter 1 Making a Stronger Me (A) · 3 lessons

Clues, puzzles and riddles

Discover P3 Term 1: Axis 1, Chapter 1

GoalUse clues and a strategy to solve picture clues, number riddles and a measuring riddle.

New words

clue · a small fact that helps you find an answerriddle · a puzzle where you use clues to find the answerstrategy · a way of working that helps you solve a problemcritical thinking · thinking carefully about clues and checking my answer

Explanation

Critical thinking means thinking carefully before you decide. A clue is a small part of the answer. When you see only a small part of a picture, such as feathers and a beak, you can guess the whole: a bird. Always say what helped you decide. In a number riddle, you use each clue in turn. Strategies help: guess and check, skip count, draw it, or cross out answers that cannot be right. Try this riddle: “My number is less than 10. If you add my number 4 times you get 24.” Skip count by 6: 6, 12, 18, 24. That is 4 jumps, so the number is 6. Last, check: 6 + 6 + 6 + 6 = 24, so it is correct.

Strategy	How it helps
Guess and check	Try a number, then test it
Skip count	Count in 2s, 5s, 6s…
Draw it	Make the problem visible
Cross out	Remove answers that cannot be right

Worked examples

Clues: it has wings, feathers and a beak. Nour decides it is a bird. What helped her? The feathers and the beak: only birds have both.

Riddle: “My number is less than 10. Add it 3 times to make 21.” Marwan skip counts by 7: 7, 14, 21. That is 3 jumps. The number is 7, and 7 + 7 + 7 = 21.

Riddle: “I am a unit for length. I am good for measuring a pencil. There are 100 of me in one metre.” The answer is a centimetre. Habiba crossed out litre and kilogram, because they do not measure length.

Class activity

Riddle time. In pairs, make a number riddle for your partner. Choose the answer first (for example 8), then write two clues: “less than 10” and “add me 3 times to make 24”. Your partner must say the answer and tell the strategy used.

Practice

My number is less than 10. Add it 5 times to make 40. What is my number?

I am more than 20 and less than 30. You say me when you count in 5s. What number am I?

The pencil is next to the ruler. How long is it in centimetres?

Clues: it has four legs, a tail and says “meow”. Which animal is it, and which clue is the best?