CPO Focus on Life Science text and investigation workbook have been a super find for us. I know I mentioned them at the beginning of the school year but now being in the middle of it I can say I'm quite happy with the curriculum. It takes a bit of creativity sometimes as it is a school based curriculum and the chapters of the California text available on line are lined up differently; but it is thorough, engaging and full of extra activities. There is a plethora of teaching material available for free on their website (another bonus).
Home Science Tools they are reasonably priced and ship fairly quickly. Other times I have changed things around a bit, In the beginning of the year there was a lab with a marble launcher (very expensive for two homeschoolers and one lab experiment). Luckily I was able to find directions on line to build one with a few things from the plumbing department at our local hardware store for around $5.00! So presto, just like that we had to labs in one, as you can imagine building it was just as fun as the experiment.
Now we are in the thick of cell biology and really having a blast. Who knew looking at your own cheek cells could be such fun.
We've got some live protozoa coming next week to view under the microscope before moving into some genetics and then evolution (something I'm especially looking forward to).
What do other folks use for a science curriculum? Are you having fun? I'd love to hear about it.