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Ms. Hayden

Student Instructions

A Triangle With a Difference Maths Challenge

You can do this activity at home using card and paper or you can use the template attached to complete it within Seesaw. Cut out 15 cards and label them 1 to 15 Insert the cards into a triangle format, with 5 rows. The first row will have 1 card, The second row will have 2 cards, 3rd row will have 3, etc. Place the numbers 1 to 15 into a triangle so that each card is the difference between the two cards immediately below it, to left and right. The first three cards have been done for you. 5 is the difference between 9 and 4. (9 – 4 = 5) Discuss strategies. 15 must go in which row? Why? Simplify: Use less cards. Use six cards (1 to 6) and arrange them into three rows using the rules above.

5th Grade, 6th Grade, Math
4 teachers like this
Compatible with: Chromebooks, computers, iPads, iPhones, Android tablets, Android phones, Kindle Fire

Students will edit this template: