Level 4

Series 4

 * Twenty-One & One: Numbers Twenty-One To Twenty-Three
 * Were Going On A Square Hunt: Number Twenty-Five & Square Numbers
 * Thirty's Big Top: Numbers Thirty To Fifty
 * Land Of The Giants: Numbers Ten To Fifty
 * Fifty: Adding Fives

Series 5

 * How Rectangly!: Number Factors Of Twenty-Three & Twenty-Four
 * Rectangle Racers: Number Factors To Twenty-Four
 * The Team Factor: Number Factors To Twenty-Four
 * Hidden Talents: Breaking Bigger Numbers Into Small Numbers
 * Making Patterns: Number Patterns
 * Now In 3D: Cube Numbers
 * Club Picnic: Grouping Numbers
 * Too Many Threes: Adding Threes
 * Circus Of Threes: The Three Times Table
 * Figure It Out: Numbers Thirty-One & Thirty-Two
 * Snow Day Doubles: Factors Of Thirty-Two
 * Steps Vs Squares: Step Shaped & Square Numbers
 * Puzzle Square: Moving Shapes Together
 * Four On The Floor: The Four Times Table
 * Sky High Fives: The Five Times Table

Specials

 * The Treasure Of Hexagon Island: Solving Puzzles