This Earth Day math activity for 3rd grade gives students a fun and engaging math review option during April. In this activity, students are tasked with helping the students in the story collect items to recycle by answering a series of challenge questions. All questions are presented as word problems. Each page comes in full page and 1/4 page options.Standards covered:- Estimating Sums (3.NBT.2)- Subtracting 3-Digits (3.NBT.2)- Multiplying by Multiple of 10 (3.NBT.3)- Two-Step Word Problems (3.