I have a Y4 child who's very good at Maths - not a genius but very quick and understands mathematical concepts intuitively. He whizzed through the Usborne Maths and logic puzzle books and is looking for something else - doesn't necessarily need to be fun, he likes the dry stuff too! I've put Y5 in the title as he's currently enjoying a Y5 one we had from WH Smith (photo attached).
Can anyone recommend any specific books or ranges please? Doesn't just have to be Maths - could also include grammar, spellings, logic etc.
(I know they're logic puzzles but we tried the Junior Murdle book, and realy didn't rate it!)