Having been in mathematics education for a long time, I’ve seen many resources. Even though the National Numeracy Strategy (NNS) no longer fits with the current National Curriculum, there are some cracking resources that are still brilliant to use in the classroom.
I still dip into these publications on a regular basis for problem solving ideas. So I include the links below. I urge you to check out Zids and Zods!
NNS Finding Rules & Describing Patterns
NNS Shape and space activities