These Spring Engineering challenges are perfect for adding some creative thinking skills into your Spring lessons. The bundle is a $16 value, so you save $6 on the bundle! That is a 40% discount! When solving each challenge presented, students must stick to a budget and use the available supplies. These STEM challenges meets several NGSS standards and encourages critical thinking, budgeting, and engineering skills. Suggested Plan of Implementation: Prior Week: Send home the parent letter requ