Open-and-go lessons that inspire kids to love science.

Science curriculum for K—5th grades.

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  • Hands-on lead students in the doing of science and engineering.
  • NGSS-aligned and Common Core make the transition to the Next Generation Science Standards and support Common Core.
  • Less prep, more learning prep in minutes not hours. Captivate your students with short videos and discussion questions.

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Invisible Forces

Forces, Motion, & Magnets

3rd Grade, 4th Grade, 5th Grade

NGSS Standards covered: 3-PS2-3 , 3-5-ETS1-1 , 3-PS2-4 , 3-5-ETS1-2 , 3-PS2-2 , 3-5-ETS1-3 , 3-PS2-1
This introductory forces unit will give students a new understanding of the invisible pushes and pulls that operate in the world around them. They will realize that understanding forces will let them do surprising things — from building a sturdy bridge from paper to using the pull of a rubber band to send a cardboard “hopper” flying. What students learn in this unit will connect to the world around them, leading them to think about such things as the force of friction as they slide down a playground slide or the the invisible force that makes magnets cling to the refrigerator. Hands-on activities focus on engineering, investigation, and discovery. Less
  1. Lessons
  2. Activity Prep
  3. Assessments

Mystery 1: Forces

Exploration (20 min)
Activity: Hopper Popper (45 min)
Extras (1 hr)

Mystery 2: Balance of Forces, Engineering

Exploration (22 min)
Activity: Paper Bridge Engineering (30 min)
Extras (2.5 hrs)

Mystery 3: Balance of Forces, Friction

Exploration (13 min)
Activity: The Great Slide Challenge (45 min)
Extras (1.5 hrs)

Mystery 4: Magnets, Forces

Exploration (15 min)
Activity: Magnet Discovery (25 min)
Extras (1 hr)

Mystery 5: Magnets & Engineering

Exploration (20 min)
Activity: Invent a Magnetic Lock (35 min)
Extras (3.3 hrs)