Level 11: [bk. 1] Counting insects / written by Brenda Boreham -- [bk. 2] Making a paper pond / written by Brenda Boreham -- [bk. 3] The life cycle of a frog / written by Brenda Boreham -- [bk. 4] The many things I can do / written by Terri Mack -- Level 12: [bk. 1] Bears / written by Brenda Boreham -- [bk. 2] My five senses / written by Terri Mack -- [bk. 3] Summertime / written by Terri Mack -- [bk. 4] Who is the forest for? / written by Donna Klockars -- Level 13: [bk. 1] Bald eagles / written by Brenda Boreham -- [bk. 2] Fall is here! / written by Terri Mack -- [bk. 3] Go out and play / written by Donna Klockars -- [bk. 4] Squirrel learns to count / written by Brenda Boreham -- Level 14: [bk. 1] Leaf rubbings / written by Brenda Boreham -- [bk. 2] Ravens / written by Brenda Boreham -- [bk. 3] The forest adventures / written by Terri Mack ; illustrated by Bill Helin -- [bk. 4] Wintertime / written by Terri Mack -- Level 15: [bk. 1] Food chains / written by Brenda Boreham -- [bk. 2] Pine forest pond music / written by Donna Klockars ; illustrated by Bill Helin -- [bk. 3] Spring has come! / written by Terri Mack -- [bk. 4] The old cedar tree / written by Brenda Boreham ; illustrated by Bill Helin -- Level 16: [bk. 1] Making a folded paper bear / written by Brenda Boreham -- [bk. 2] Play days / written by Donna Klockars ; illustrated by Bill Helin -- [bk. 3] The sandwich mystery / written by Donna Klockars ; illustrated by Bill Helin -- [bk. 4] We go for a hike / written by Terri Mack -- Level 17: [bk. 1] Busy chipmunks / written by Donna Klockars -- [bk. 2] Hummingbirds / written by Terri Mack ; photography by Keith MacDonald -- [bk. 3] I wonder / written by Donna Klockars -- [bk. 4] Planning the feast / written by Donna Klockars ; illustrated by Bill Helin -- Level 18: [bk. 1] An egg count / written by Brenda Boreham -- [bk. 2] That reminds me / written by Terri Mack ; illustrated by Bill Helin -- [bk. 3] The pine forest cookbook / written by Donna Klockars ; illustrated by Bill Helin -- [bk. 4] Tide pools / written by Donna Klockars -- Level 19: [bk. 1] Letters to owl / written by Donna Klockars ; illustrated by Bill Helin -- [bk. 2] Loons are amazing! / written by Donna Klockars -- [bk. 3] The western red cedar / written by Brenda Boreham -- [bk. 4] We greet the four animals / written by Terri Mack ; illustrated by Bill Helin -- Level 20: [bk. 1] Cedar -- the tree of life / written by Brenda Boreham -- [bk. 2] Pine forest news / written by Donna Klockars ; illustrated by Bill Helin -- [bk. 3] The pine forest community / written by Donna Klockars ; illustrated by Bill Helin -- [bk. 4] We greet the four seasons / written by Terri Mack ; illustrated by Bill Helin.