Example 1
Dan is older than Eva. Fay is younger than Eva. Gus is older than Dan. Who is the oldest?
- Place Dan above Eva, Fay below Eva.
- Gus goes above Dan: Gus, Dan, Eva, Fay.
Answer: Gus
🦘 Kangaroo Grade 3 · session 7 of 24 · 60 minutes · ⭐ Plus
Ordering and logic puzzles
Who is the tallest? Who ate the cake if only one is telling the truth? Draw a line, make a table and test each answer choice: logic puzzles are about writing down what you know.
A complete lesson · 60 minutes
Teach it, see it, practise it, all on this page.
Open this page with your learner and work down it, or press Teach this lesson to go through it one step at a time on a big screen. Every section has something to do.
- Warm-up4 min
- Ordering8 min
- True or false9 min
- Logic grids7 min
- Guess and check7 min
- Activity 17 min
- Activity 27 min
- Activity 36 min
- Quiz4 min
- Set the project1 min
By the end you can
- Put people or things in order from clues
- Test who is telling the truth by trying each possibility
- Use a logic grid with ticks and crosses
- Guess, check and improve
Before you start
- Reading carefully
- Adding and subtracting to 100
Have ready
- Paper and pencil
- Small cards to move around for ordering puzzles
Grade 3 · ages 8 to 9 · contest level 3–4
Warm-up · think first
Ann is taller than Ben. Ben is taller than Cy. Who is the shortest?
Show the answer
Cy. Draw a line from tall to short: Ann, Ben, Cy.
Teacher tip: Ask them to draw it, even if they know the answer. The drawing is what makes harder puzzles easy.
Part 1 of 4 · learn, see, practise
Putting things in order
Draw a line and place each person as you read each clue. 'Before' and 'after', 'taller' and 'shorter' are directions on the line.
For positions in a row: if someone is 3rd from the front and 5th from the back, there are 2 people in front, 4 behind and the person: 2 + 4 + 1 = 7.
Example 2
In a race Ali finished before Bo but after Cy. Dee finished last. Who was second?
- Cy is before Ali, and Ali is before Bo: Cy, Ali, Bo.
- Dee is last: Cy, Ali, Bo, Dee.
Answer: Ali
Practise it
Start with the warm-up and go as far as you can. The stretch questions are meant to be hard.
Warm-up
Warm-up
Core
Core
Stretch 🔥
Stretch 🔥
Answers (for the teacher)
- C
- green
- 2
- 7
- 10
- DACB
⭐ Part of Pure Faith Plus
The rest of this lesson is in Plus
Already have Plus? Log in and the whole lesson opens.
You have seen the plan, the warm-up and part 1. With Plus you also get:
- Part 2: True and false statements, with practice at three levels
- Part 3: Logic grids, with practice at three levels
- Part 4: Guess, check and improve, with practice at three levels
- Class activity 1: Race results
- Class activity 2: Pets and owners
- Class activity 3: Truth and lies
- A 8-question quiz
- After-class project: Make a logic puzzle
- Homework and a printable practice sheet with answers
- Teach mode and the minute-by-minute teacher's plan
The first 2 lessons of every course, every game and all maths practice stay free.
That is ₹208 a month for every lesson of every course. Prefer a teacher? Ask about live classes.
FAQ
Ordering and logic puzzles: questions
What logic questions are in Math Kangaroo Grade 3?
Ordering people from clues, positions in a queue, who tells the truth, matching people to things, and guess-and-check number puzzles.
How do you solve 'only one is telling the truth' puzzles?
Try each possible answer in turn, mark every statement true or false, and keep the answer that gives exactly one true statement.
How do you teach logic grids?
Draw a table with people and things, cross out what each clue rules out and tick what is left; each row and column gets one tick.
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