These are the words for Grade 3 Lesson 3o from the Steck-Vaughn Core Spelling Workbook.  Lessons that go along with these Spelling Words can be found in the Steck-Vaughn Core Skills Spelling Workbook for Grade 3.  I teach 2nd grade but I have found that often the grade level on these types of books doesn’t necessarily fit very well with the grade level that is advertised.  I’ve used spelling words from a 3rd-grade spelling book for 2nd grade for a number of years and they have been grade-level appropriate. 

The link below is not an affiliate link:

https://www.amazon.com/Steck-Vaughn-Core-Skills-Spelling-Workbook-dp-054426780X/dp/054426780X/