The Giggle Glasses

<p><span style=color: rgba(000var(--O42jJQ1))>Can pink star glasses REALLY make everything funnier? When two teachers discover mysterious Giggle Glasses they design a secret experiment. Two classrooms same story but only one class wears the glasses - and they don't even know they're special! Watch how researchers test what truly causes what! Classroom adventures that reveal how scientists find the truth. Prepare for aha! moments at any age!</span></p><p><span style=color: rgba(000var(--O42jJQ1))> </span></p><p><em style=color: rgba(000var(--O42jJQ1))>Building tomorrow's problem-solvers one story at a time.</em><span style=color: rgba(000var(--O42jJQ1))> </span></p><p></p><p>This is Volume 2 of the Impact Evaluation Series for Children. It is a brief introduction to Random Assignment.</p><p></p>