Place value additions: 4-digit numbers
In-depth Investigation: Magic Chains
Children use their knowledge of inverse operations to quickly work out a sequence of calculations.
Units of time; draw line graphs
In-depth Investigation: Day I Was Born
Children calculate the day they were born on, and other birthdays of friends and family. They then investigate corresponding months.
Tell time to nearest minute: am/pm
In-depth Investigation: Palindromic Time Intervals
Children systematically find palindromic digital times and list them in an ordered way. They convert these to analogue times and calculate the intervals between them.
Rehearse 24 hour clock; time intervals
In-depth Investigation: Slow Coach
Calculate time intervals to investigate return journeys on a coach timetable. Slow Coach from nrich.maths.org.
Subtraction: frog with 3-digit numbers
In-depth Investigation: Cats and Dogs
Children work to solve a puzzle involving adding two 3-digit numbers. They find several possible solutions, and then invent their own puzzle.
Place value in 4-digit numbers
In-depth Investigation: No Zero
Children investigate how many numbers between one and ten thousand have a zero. They use their understanding of place value in numbers with up to 4-digits.