Jennie Mackenzie was director of a preschool before becoming Early Chilldhood Advisor for the ABC radio, television and associated projects for under-8-year-olds. She has also produced radio and TV programs, books, CDs and tapes for the ABC, and programs for TAFE Satellite Education. She won a Television Society of Australia award for an episode of Play School. Mackenzie was a foundation member of Contact, a committee set up by the New South Wales Government to provide support for isolated children and their care-givers. As well as the children's books listed here, co-authored with John Fox (q.v.) and Clare Shannon, Mackenzie devised the Fun School series (Bay Books) and had a regular double-page spread 'Play School' in the
Woman's Weekly. Mackenzie devised and wrote craft and activity books for J. B. Fairfax, Bay Books and Scholastic, and contributed to the
Mickey's World Little Readers series
.
In recent years Mackenzie has been the Children, Families and Media specialist in an inter-disciplinary team at The People for Places and Spaces.