This series of Challenging Science Crosswords has a unique student-friendly approach to increasing science literacy. They have been thoroughly trialled in classrooms with positive feedback from students who find the crosswords great for revision and fun to do. Teachers have found the crosswords to be excellent springboards for promoting discussion of science concepts and issues and for introducing or revising core curriculum. The crosswords have been designed so that teachers can target every student's ability and confidence level with an easy photocopiable feature that makes the activities simpler or more challenging.