Spaceships Solve problems within the fun context of aliens from another planet

Spaceship problems          Bipods + Quadripods          Tripods + Pentapods          Tripods + Octapods

Spaceship problems          Quadripods + Heptapods          Hexapods + Nonapods

Spaceship cards set          Bipods + Pentapods          Tripods + Heptapods          Quadripods + Hexapods

Spaceship cards set          Quadripods + Nonapods          Heptapods + Octapods

Nrich Maths          Zios and Zepts