OK, hopefully this will be the last in my book referrals. Here are some more art books I found whilst on holiday:

CREATIVE TECHNIQUES: WATERCOLOR
“This new title gives art students and hobbyists a complete course in the many different techniques applicable to watercolor painting. An introductory chapter describes the pigments, brushes, papers, and other needed equipment, and shows how to use them to best effect. Following chapters present 14 distinct approaches to watercolor art, each approach starting with an example of a finished work by a famous watercolor artist. Among them are a Cézanne painting of a woodland scene that emphasizes the transparent effects that can be achieved with watercolors. A strikingly different exercise shows a Turner seascape, and demonstrates how he achieved dramatic effects by applying pigments to wet paper. A watercolor portrait by pop artist Chuck Close demonstrates the pointillist technique, and Robert Delaunay’s Hommage à Bleriot, demonstrates use of watercolor in abstract art. Students are presented with step-by-step exercises to master these and the other creative techniques shown throughout the book. Full-color photos, reproductions, and illustrations on every page.”

150 PROJECTS TO STRENGTHEN YOUR PHOTOGRAPHY SKILLS
“Titles in Barron’s Aspire Series offer students of the arts self-teaching tutorials in the form of progressively more challenging projects for them to complete. Carefully structured lessons encourage students to develop their own styles and aspire toward professional careers. In this book, author John Easterby describes photography as the art of storytelling through visual images. Focusing primarily on digital photography, he discusses cameras of different types and sizes and the uses of supporting photographic tools, such as tripods, interchangeable lenses, and lights. He advises on studying the work of professional photographers in galleries, books, and magazines as an important first step in understanding how to look at photos. Tutorial projects include “remaking” a well-known photo by a famous photographer, shooting a natural light portrait, using backlighting, shooting scenes at night, expressing movement in photos, freezing action, keeping a photographic diary, photographing sports events and crowd scenes, using a series of pictures to tell a photo story, and many others. Readers learn how to set up a desktop studio, edit images, and build their portfolio. The enlightening text is supplemented with more than 400 instructive illustrations.”
You may also be interested in 200 PROJECTS TO STRENGTHEN YOUR ART SKILLS.
If you are a teacher, perhaps request an examination copy?