We discovered a misprint in the PHYSICS MULTI-USE YEAR-LONG ACTIVITIES and some of the BALANCING CHEMICAL EQUATIONS TATSULOK (laminated version). We are doing our best to contact those we know have purchase the said items so we can send them a replacement for the misprinted cards. If you have purchased the said items, please let us know so we can rectify our error.
Thank you so much for understanding. God bless!