Complete 5-piece vintage homeschool math curriculum set of "Key to Measurement" by Betsy Franco, published by Key Curriculum Press. This highly praised, step-by-step series is a fantastic resource for helping students master English units of measurement through clear, practical exercises.

This bundle includes the full student progression along with the vital teacher's volume:

Book 1: English Units of Length

Book 2: Measuring Length and Perimeter Using English Units

Book 3: Finding Area and Volume Using English Units

Book 4: English Units for Weight, Capacity, Temperature and Time

Key to Measurement: Answers and Notes (Covers Books 1–4)

Student Workbooks: Very Good condition with minor shelf wear on the covers. Pages are clean.

Answers & Notes Booklet: Good, clean copy with tight binding. No highlighting or internal marks.

Booklets show light vintage shelf wear and soft corners typical of age/storage, but all are structurally sound, intact, and completely ready for use.

Please review all photos for an accurate look at the exact items you will receive.