Inkredibles: Launch into Maths Invisible Ink Activity Book

Blast off into a whole new world of learning with Launch Into Maths! Children can test their wits against the multitude of out-of-this word number puzzles featured in this incredible invisible-ink book! Use the invisible-ink pen to answer the questions and reveal the hidden answers within. Each maths-focused activity features a space theme, which makes learning a ton of fun!