This great 23 page powerpoint will walk your students through vocabulary words for Grade 4 Common Core Unit 1 : Place Value, Rounding and Computation.Vocabulary is learned throughout the units,but this power point will help to reinforce important words. Words included are algorithm,digit,estimate, expanded form,word form, standard form,number, period, place value,and rounding. This power point can be used as a whole class activity or as a small group center activity. I use it on my promethean board, but you can use it with any computer or interactive board that supports power point. It can be used as an introduction, reinforcement activity or a review activity. Students will enjoy using technology to learn their math vocabulary words. Don't forget to write feedback on this item to ensure you get your TPT points! Thank you for your interest. Enjoy!