Math Enrichment Activities for Grade 4, Grade 5 and Grade 6. For Middle Schoolers this might be a regular problem. Can you solve this problem in under a minute? Most of my grade 4 students have been able to solve this problem. Challenge? #VsOnlineMathTutoring #OnlineMathTutor #InterestingMathProblems #MathEnrichment #UpperElementary #CriticalThinking #ProblemSolving #Algebra