Project-Based Engineering for Kids...several FREE plans for making gizmos like a catapult from popsicle sticks.
The Magic Ketchup Experiment! Kid friendly site with lots of neat experiments!
Simple, hands-on STEM learning for preschoolers.
How to Make Lightning — Two simple science experiments for Juniors doing the Get Moving program.
Nonfiction That Supports STEM #weareteachers
How to Make a Balloon-Powered Paper Plate Racer « Model Cars, Rockets & Trains
Simple Activities for Little Engineers // Actividades sencillas para pequeños ingenieros
Making mountains with graham crackers!
Earth Science activities to make your units come to life-- my students LOVE these. Easy, hands on and exciting extenstions and experiments.