In-depth Investigation: Table Digital Roots
Children find the digital roots of multiples of 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 and 12. They identify patterns and relate these to what they know of numbers.
In-depth Investigation: Present Prices
Children use logic and addition, along with some trial and improvement to solve a problem involving money.
In-depth Investigation: Rocking Remainders
Children divide 11, 22, 33… 99 by 3, 4, 5 and look for patterns in the remainders.
Use the Group activity on Day 3 as this unit’s in-depth problem-solving activity.
In-depth Investigation: Egyptian Rope
The ancient Egyptians were said to make right-angled triangles using a rope which was knotted to make 12 equal sections. If you have a rope knotted like this, what other triangles can you make? Egyptian Rope from nrich.maths.org.