STEM 4 Puzzle Set

Guaranteed to give your brain a work out, this set contains four different wooden puzzles:
Science: Anti-Gravity Puzzle
Will you be able to work out how to remove the rocket from inside the cup without moving or touching the cup? No hands allowed!
Technology: Robot Transformer
Convert the cube into a robot. Will you be able to figure out the process to turn him back into a cube?
Engineering: Ball Bearing Test
Can you work out how to make the ball bearings sit at opposite ends of the puzzle?
Mathematics: Number Challenge
Will you be able to make every row add up to 10? Arrange the numbers 1-4 so that every horizontal and vertical row, and the two corner-to-corner diagonals rows equal 10.