Generalization: Unseen power, visible effects.

"I just subscribed to Byrdseed.TV and am loving it -- though it is kind of scary addictive in a binge-watching kind of way (that, by the way, is a compliment)."  ~  Elizabeth from Florida

"The ideas presented are clear and straight-forward and my students have responded positively to every lesson idea I’ve used. It’s my favorite go-to resource."  ~  Melissa in North Carolina

"This was the best money I have ever spent on a teaching tool!"  ~  Christine in Wisconsin