Simpler Tangram version. It would be useful for kids under seven or people with mental disabilities as mental retardation or dementia.

Link to Silhouette book:

https://drive.google.com/file/d/1N_ykRwRk5j9an6nLIai1bqIgnbqZQpXD/view

(Note: Collection B aren't "solutions" just simpler problems)