Being an advocate for a child does not equate to just being a certified teacher. Don't be discouraged if you do not have a background in education, there are tons of resources out there that are easy to understand and use. Here are a few that I have found to be great when I am stuck in creating lessons or activities.
Pinterest: I call this the holy grail of finding interesting and innovative ways of teaching. I have a Pinterest page that is full of links to great lesson plans from teachers and parents. This is usually the first place I go when thinking of ways to present a concept in a fun/different way.
The Mailbox Magazine: I have subscriptions for the early childhood up to third grade. They have great ideas/projects that fit into themes for each season. For the older kids they follow the national standard (CORE) themed lesson plans. While they cater to teachers specifically I have used several projects/ideas for my child as well as small groups of children. If you don't want to pay for the subscription sign up for their website, they send emails with great ideas for all subject areas.
Highlights: I grew up on this magazine so seeing it continue makes me very happy! This past year they have created a baby Highlights called Hello. It is made with thick material and fits small hands. I used it in my toddler classroom and left it on the baby bookshelf for the kids to explore and 'read' it. By the end of the year the magazine was still holding up, a feat for a class of 13 1 to 2 year olds!