Third grade writers will be tasked with writing longer and more complicated sentences. This guided lesson in understanding, constructing and punctuating sentences can support kids as they learn to build bigger and better sentences in their writing. Grammar instruction and practical examples were written by our curriculum experts, complete with a list of recommended building sentence worksheets for third graders.

Learning common constructions for words is one way that third graders can get traction on their spelling and reading comprehension skills. This guided lesson in word structure introduces kids to the idea that most words are made up of smaller words, and provides opportunities to apply this learning with practical examples. For more printable practice with word structure, check out our recommended worksheets.

Calculating the volume of rectangular prisms is a new skill that is introduced in 5th grade. Students will apply mathematical formulas to find the volume of different kinds of figures and also determine the volume of a figure composed of two connected rectangular prisms. Learners will also work with other kinds of measurement when they make larger or smaller versions of figures (to scale) and learn to convert measurements.