Covering 8 skills (subsets of Standards) and 3 domains, these problems are quite varied. They are in domain-cluster-standard-skill order where "skill" is a subset of a standard. Within a skill, they are in difficulty order.
The reason for the 4 sets of problems is that everyone has different needs and different time allotments. So, the shorter worksheets work for some and the longer ones for others.
[The problems in All WORKSHEETS and PREVIEWS are printed in difficulty (1 [easy], 2 [not so easy], 3 [proficiency] up to 4 [mastery]) order within a skill. The actual difficulty level appears slightly to the left of the DK box of each problem in a very small font. Also, instructional references appear on worksheets but are optional on quizzes.]
You might also want to check out CONCEPT questions
, UNIT: GIFTED/CHALLENGING topics
, Grade 8 Summary
, CONSTRUCTION problems
, STEM problems
and Level 4 (most CHALLENGING) problems
for the 8th grade.