A range of different STEM challenges for lessons or an off-timetable day. Perfect for National Science and Engineering Week! Practical Action offers a range of different STEM challenges that can be both incorporated into lessons or used for transition, curriculum enrichment day, parental engagement or a STEM club. Most STEM challenges are accredited for the CREST discovery award. Different challenges are suitable for a different age ranges and abilities, covering pupils from age 7 to 16.