Children photo album with animated collages

I wonder how the slides between min. 1.30 and 1.55 work - the kids' photos seem to be placed on the same slide with striped background, but you cannot see them all at once from the very start, do you know what I mean?

I guess i saw this effect in the Collage menu

Cindy, this is created using the 3D camera feature in the slide editor. You're absolutely right - there's actually just one slide (with the striped background) and there are several layers on this slide, 4 photos and some cliparts, to be exact. Each of the photos has its own animation settings, and the 3D camera is used to zoom in a certain photo, then move to the other photo (changing the 3D camera "pan" value), and then zoom out to see the whole big slide with all layers at once.
Take a look at our 3D camera tutorial - the video demo helps you figure out how it works.

That's sooo cute! One questions folks, it's about the first slide after the intro: there are Tigger and Mickey Mouse jumping in a funny way, and then they swap places and, like, bounce off each other - how do you do that? I'm OK with standard animation like panning and zooming or rotations, but this seems to be something beyond my basic knowledge!

Hi Toni, the "bounce off"effect you mention is created by choosing a special animation mode.
There are 6 animation modes in SmartSHOW 3D: constant speed, smooth, push out, bounce off, speed up and slow down.
You can change the mode for a chosen layer in the Layer tab of the slide editor. This video lesson shows how animation modes work (around min. 0.59)