More Mudpies to Magnets
If you prefer your science "outside the textbook" then you'll want to look at Elemental Science. Designed as a Classical science program "loosely based on the ideas for classical science education that are laid out in The Well-Trained Mind," this one may also appeal to Charlotte Mason home educators. The program itself provides a framework of science study while your science "text" and experiments are found in a selection of quality resource books including DK, Usborne, Kingfisher and Janice VanCleave
These are very helpful compendiums of science activities especially conceived for the youngest "scientist." Each has an introduction, materials list, detailed instructions for you (including discussion and conclusion), plus a "Want to do more?" extension activity to use if you want to expand on the activity. The original book is somewhat less useful than the sequel. Although activities are great, the organization makes it a little difficult to find activities to go with a particular study. Basic units of organization include: On Your Own (Science Center Activities), Building with Science (Construction and Measurement), Science for a Crowd, Paints and Prints, Wet and Messy, Science to Grow On (Health and Nutrition), Learning About Nature (Outdoor Science), and Acting Out Science in a Big Way. Use the index to locate activities on particular science topics. The second book has a more useful organization. Basic units include: Colors, Crystals and Creations (Chemistry); How Things Work (Physics); Digging in the Dirt (Geology); How Hot, How Cold, How Windy, How Wet (Weather); Aerial Acrobatics (Flight and Space); Roots and Shoots (Plants); Houses for Slugs, Hideouts for Hamsters (Zoology); and How Much, How Far, How Many (Mathematics). A most welcome feature of both is the inclusion of a suggested minimum age for each activity.
There are two Elementary Science programs for younger learners: Intro to Science for K-1 and Exploring Science for PK-K or K4/K5. These are structured similarly to the grammar stage programs, but simplified for younger learners. At this level, the program emphasizes observation, hands-on activities, nature studies, read-alouds from resource and library books - and lots of coloring (although I have already noted some concerns about the graphics with the upper levels, you may want to locate alternative coloring pages especially at this level, as young students may not be particularly eager to color some of these rough sketches). These are also 36-week courses, with weekly assignments provided in a bullet-point-like format and two scheduling options (2- and 5-day) provided. In Intro to Science, you'll spend six weeks each on chemistry, physics, geology, meteorology, botany and zoology. Exploring Science spends four weeks each on "the world around me," water, air, weather, plants, Earth, chemistry, sound, and motion. Recommended library books are listed for each week, and there are just a few primary resources you'll use all year long. For Intro to Science, these are More Mudpies to Magnets, Handbook of Nature Study, and Usborne First Encyclopedia of Science. Exploring Science uses only Science Play as a basis for experiments (reading selections are found in other resources). Student pages at this level provide very simple experiment record forms, coloring pages and blank pages to paste results from activities.
Items listed in this section tend to be complete science programs with a teacher and student component, requiring few supplements besides science supplies.
Less than a whole curriculum, but with a mix of instructional information and activities. Items here tend to cover a range of grades all areas in science.