ISBN: | 978-5-5138-5388-6 |
High Quality Content by WIKIPEDIA articles! Rebecca W. Keller, Ph.D., incorporated Gravitas Publications Inc. in 2003 to develop and publish core sciences curriculum under the Real Science-4-Kids imprint. She has authored and published Real Science-4-Kids student texts, teacher manuals, and student laboratory workbooks in chemistry, biology and physics to serve kindergarten through ninth grade, available through mainstream and home school book distributors.