bols. For example, Augmented Chemistry allowed students to
select chemical elements, compose into 3D molecular models,
and rotate the models [39]. Clark et al. proposed an augmented
paper-based coloring book with 3D content and provided
children with a pop-up book experience of visualizing
the book content [40]. These augmented real objects create
new visualizations that have potential to enhance the understanding
of abstract and invisible concepts or phenomena.