Ladies,
One thing that is a part of curriculum... is rewrites.

We have been blessed to be able to use the original versions of our guides with few major updates to this point, however updates are a part of passing years and changing resources.

This is why there are always differing versions of any curriculum.
I know that several items I used with my oldest son last year went into revisions shortly after I purchased them, so I know firsthand that this happens often.

We've also been very up front in letting our customers know that the Earlybird Math was going out of print, both on our website and in our catalog (and on our Message Board). So, families have had awhile to understand this change was coming.
If you happen to be new to Heart of Dakota, and you purchased a guide prior to the new version coming out, it will still function very well. I used it this way last year myself, because the rewrites weren't done.

You can also still use the Essentials Math without the new guide if desired, simply doing 2 pages a day of the math in order to complete it on time.
If you do prefer to have the hands-on math activities matched to your math workbook, then you could consider purchasing the new guide. If you desire to receive the discounted price on the new guide, simply contact us and we will send you a postage paid mailer to return your old guide. With the price being 50% off in this scenario, you are still getting a bargain. Just think what you would pay for a Teacher's Guide for math alone for most curriculums!
Whether you desire to take the opportunity to purchase the new guide is truly up to you, however please understand that we are now moving forward with the discount as outlined. We've considered the other options and have decided on this course of action. A PDF of the math changes alone would result in a 42 page document, which would be expensive to copy and labor intensive to collate and stock. With a change of this magnitude, a new version of the guide was the answer.
We pray that you will have a wonderful, God-glorifying school year with Little Hearts!
Blessings,
Carrie