The sensory aspect of this lesson—sandpaper and cotton balls—really hits the mark! Social skills including empathy and kindness, which are not intuitive for all preschoolers, are effectively reinforced.
How to grow your own crystal necklace DIY with alum salt. Make crystals at home. This also works as a great science project for children or a cute original gift for a friend. Click through for the full tutorial / DIY including a printable step-by-step checklist.