Children book/picture book template

Question

I got inspired by the book "Newtonian Physics for Babies" and other books by Chris Ferrie. So I wanted to gift a children book to someone in my family. The book will be a first encounter with math and physics, something like "My First Book about Mathematics and Physics".

The problem is that I can't seem to find a good template for this. I want the pages to be A5 size so that I can print 4 pages (2 pages on one side) on an A4 paper. I tried \documentclass[a5paper,13pt]{book}, but this doesn't seem right. Maybe the scrbook class? I would also appreciate input on which font I should use. I am also open to write a new documentclass, although I have very little experience in doing so.

Summary: I want help to find/create a template for children book/picture book.

Answer 1

As most babies don't need table of contents, cross references, as well as bibliography, I think using slides (such as beamer class) is more appropriate.

If features provided by beamer are too advanced for the babies, we can write the slides manually with drawing packages, such as PSTricks, TikZ, Asymptote, MetaPost, etc.

Here is an example with PSTricks:

\documentclass[pstricks,border=10mm]{standalone}
\usepackage{lmodern}

\newenvironment{slide}[1][]{\pspicture[#1](200mm,138mm)}{\endpspicture}
\newcommand{\cc}[1]{\rput[b](100mm,10mm){\parbox{180mm}{\centering\fontsize{25pt}{35pt}\selectfont #1}}}
\begin{document}
\slide[showgrid]
\pscircle[fillcolor=red,fillstyle=solid](100mm,80mm){15mm}
\cc{This is a ball on a table.}
\endslide
\slide
\pscircle[fillcolor=red,fillstyle=solid](100mm,80mm){15mm}
\psline[linewidth=10pt]{->}(100mm,80mm)(100mm,40mm)
\uput{5mm}[r](100mm,50mm){\fontsize{25pt}{35pt}$\vec{F}=G\,\frac{m M}{r^3}\,\hat{r}$}
\cc{Gravitational force acting on the ball. Ouch Charlie! That really hurts!}
\endslide
\end{document}