Building Foundations of Scientific Understanding (BFSU)

By Bernard J. NebelChecked October 31, 2026No affiliate links. Programs never pay to appear. How we label

Building Foundations of Scientific Understanding is a K to 8 science program in three books of lesson plans for the parent or teacher: Volume I for K to 2nd grade, Volume II for 3rd to 5th and Volume III for 6th to 8th. Lessons are hands-on and minds-on, building in sequence and teaching matter, life, physical and earth science side by side, each with review questions, writing tasks and a list of books to read.

Grades it covers

As the publisher states it: Volume I (K to 2nd grade), Volume II (3rd to 5th) and Volume III (6th to 8th).

Subjects: Science
Grades: Volume I (K to 2nd grade), Volume II (3rd to 5th) and Volume III (6th to 8th) source ↗
Method: Mastery source ↗
Format: Books and workbooks source ↗
Faith label: Not labelled
Cost a year: No price on the publisher’s own site when we checked. Ask the publisher.
Placement: No placement test on the publisher’s site when we checked.

What it does well

Each lesson builds on the ones before it, so children see how ideas in different fields of science connect.
Lessons lead children to reach conclusions themselves through observation and reasoning, with practical activities for each one.
Every lesson has review and assessment questions, writing assignments and a list of books for the age.
The author answers questions on the program's own forum, and appendices map the lessons to NGSS standards.

Watch for

The books are teacher guides, not student books, so the parent reads ahead and leads every lesson.
There are no pictures or graphs in the books; the texts send you to online image searches instead.
The volumes must be done in order: older children new to science are told to start with Volume I.
The program's site lists no prices and sends buyers to an online bookseller.

It fits

A parent who enjoys science and wants to lead discussions and simple experiments, building a real sequence of ideas from kindergarten up.

It doesn’t fit

A parent who wants an open-and-go box with student pages and supplies, or a child who will work through science alone.

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Compare Building Foundations of Scientific Understanding (BFSU)

Other programs for the same subject and grades:

Apologia Science Preschool to 12th grade; each elementary course is for K to 6th grade, General Science for 7th to 8th, Physical Science for 8th to 9th
Beautiful Feet Books Kindergarten to 12th grade, in grade spans such as K to 3rd, 4th to 6th and 5th to 8th
Blossom and Root Preschool to 6th grade (Level 6 still being finished)
BrainPOP Homeschool Grades 3 to 8 on the Homeschool plan; kindergarten to 8th grade with BrainPOP Jr. added
CK-12 Kindergarten to 12th grade, plus some college and adult courses
Elemental Science Kindergarten to high school; Sassafras Science volumes run from K to 6th grade
Evan-Moor Pre-K to 8th grade; the homeschool resources run pre-K to 6th grade
Exploration Education Elementary (K to 3rd), Standard (4th to 6th) and Advanced (7th to 10th)

Lists it is on

What we read, and how we label

Every fact on a card was read on the publisher's own website on the date shown, and the page it came from is linked. A fact we could not confirm there is left out. Costs are for one child and one year of the main package, as the publisher's page showed them that day; prices and sales change. Method and format are the publisher's own description where it gives one. The only thing we say about religion is one label, secular or faith-based, given by the rule above; where the publisher's pages don't settle it, the card has no label.

The publisher’s pages we read on October 31, 2026:

Something wrong or out of date? Publishers and parents can send a correction and we will fix it. Publishers can send corrections, never money. All programs compared · Find your homeschool style