What's in the Third-Grade Kit Third grade is where independence starts to build. Your child will read full literature selections, start cursive handwriting, and tackle multiplication. History moves into the early modern era, science deepens across all five disciplines, and thinking skills shift toward more abstract problem-solving — logic puzzles, strategy games, and multi-step challenges. STEM this year includes a marble-run engineering set that tends to take over the dining table. Save Money Teaching Multiple Children Our Additional Student Kit includes only the consumable items for this grade level, saving you money when you are homeschooling more than one Third-Grade student this year. Purchase one curriculum kit, then buy only this money-saving Additional Student Kit for the second student.