This document provides a tutorial for the Size Wise app, which allows users to take photos exploring ratios and proportions. The tutorial introduces the app's tools like virtual props, calipers, and a gallery for comparing photos. A sample activity challenges users to direct a subject to different sizes relative to a virtual giraffe prop using the tools. The gallery allows analyzing relationships between image sizes, actual sizes, and distances from the camera across multiple photos.

2. This tutorial is intended to:
 Introduce all the tools in the app
 Illustrate a sample activity that can be done
using the app
About this Tutorial

3. What is Size Wise? Size Wise lets you explore ratios
proportions and take funny pictures
that make things look wildly bigger
or smaller than they really are.

4. We created tools that
let you explore rich
mathematics in the
process of taking these
fun pictures.
Size Wise was inspired by forced
perspective photography
We created tools that
let you explore rich
mathematics in the
process of taking these
fun pictures.

5. Ratios & Proportions

6. When you compare the image sizes of things you see on screen,
you’re playing around with ratios and proportions.
The size of an object’s image is related to its distance from the
camera.
In fact, it’s inversely proportional. That means when the distance
gets bigger, the image gets smaller. To make something look ½ as
big, it has to be twice as far away. Using proportions can help you
plan your shots.
Ratios & Proportions
(Believe it or not, you’re doing math)

7. Sample Activity:The Giraffe Challenge

8.  Your friend is in a 1:1
relationship with the
giraffe and can tickle his chin
 Your friend is in s 3/4 the
size of the giraffe
 Your friend 1/3 the size of
the giraffe
Take three pictures that satisfy
the following:

9. EXPLORE AND SHARE is in the pic gallery. It is covered later
in this tutorial.
To get started, tap:

10. Tap VIRTUAL
PROPS as seen
here, and choose
the giraffe.
Notice there is a library of other props here for
many more activities.

11. This is where the
calipers come in.
Tap CALIPERS.
This will help you explore how tall your friend is in
relation to the giraffe.

12. Select “Add New
Friend” and enter
a name and
height for the
subject in your
photo.
This will allow Size Wise to measure your
subject’s image size and how far away they are
from the camera.

13. Once you have your giraffe and Caliper, you can start
moving around in real space to tackle the Giraffe
Challenge.
Line up the
Calipers with
the top and
bottom of your
subject on the
screen (from
head to toe).

14. Direct your friend
to stand closer or
farther from you
until she is in a
1:1 relationship
with the giraffe?
Tap RATIOS.
Notice the IMAGE SIZE RATIO box on the lower left
portion of the screen. What ratio did you get?

15. Next, direct your
friend so that her
image is 3/4 the
size of the
giraffe. Tap
DISTANCE.
Notice the DISTANCE tool shows how far your
friend is from the camera.

16. For the third part of the challenge make your
friend look 1/3 the size of the giraffe onscreen. Use
RATIOS and DISTANCE tools to set up your shot.

17. What is your friend’s image size? What is their actual
height? How far away is your friend in this shot?
Tap DATA in
Camera mode to
analyze all the
data in a single
picture.

18. With this simple activity, you can
see how the different tools can be
used to help you direct a friend for
the shot you are after.

19. A Deeper Look: the Size Wise Gallery

20. Each picture will contain measurement data you have
attached to it.
The GALLERY
shows all
pictures taken in
Size Wise.

21. DATA within
the GALLERY
allows you to
compare
information
across your
photos.
Accessing data from multiple photos will be helpful
for a number of classroom activities.

22. Explore data
across multiple
photos at the
same time and
patterns start
to emerge.
Drag in up to
four photos
to compare.
You can look for patterns in image heights, actual
heights, and distances from the camera.

23. As students access data
from their pictures in the
Gallery, they can plot it on
a graph and look for
patterns that reveal the
proportional relationships
at work.
Dive Deeper: Graph Proportional
Relationships

24. SHOW CALIPERS
brings miniature
versions of the
calipers to the
images.
These can help you get a sense of the image size
differences at a glance.

25. This can help you keep track of the relationships
you are seeing.
WRITE RATIOS
allows you to
note the ratio on
top of your
pictures.

26. Here is a detail
of writing a ratio
for the Giraffe
Challenge.
You can position it on any of the pictures.

27. Here we see a saved note, the Data box, the Ratio box,
and the Distance tool all on one screen.
NOTES lets
you add a note
associated with
a picture.
It makes it easy
to find the
Information later.

28. This makes it easier to find the pictures you want to
work with.
Within the
GALLERY you
can organize
your pictures
into SETS.

29. As a culminating
activity, you can
CREATE a COMIC
inside the GALLERY
Build stories around themes represented in the
Virtual Prop Library, like jungle scenes, caves, the
beach, and more.

30. Just select
a layout and add
text, thought
bubbles, titles,
and ratios to
create your own
comic.
Once you create your comic, you can save it, print it
and email it.

31. More Cool Features and Extensions

32. Print out paper
props from our
online stick pic
gallery and tape
them to sticks.
Hold the stick pic in front of the camera and the app
will recognize and tell you how far away it is.

33. Note that the
Caliper will
automatically
appear for the
“jersey.”
Since the app already knows the Stick Pic’s size, it can
tell you how far away you are holding it. Useful
information when setting up shots.

34. NYSCI offers a set of Size Wise
activities to get you started.
Find them at:
www.nysci.org/noticing/resources

35.  For more information, FAQ’s, and other info, visit our
website: www.nysci.org/noticing
We hope you have a lot of fun with Size Wise and
learn some things about ratios and proportions in the
process.
Resources Thanks very much for checking
out the tutorial.

36. More Noticing Tools from NYSCI
Choreo Graph allows you to explore graphs and coordinate geometry
as you create funny dance moves for your own animated character.
Volumize lets you explore surface area and volume as you take 2D
photos of things in the world and make them 3-dimensional.
Fraction Mash allows you to explore fractions while creating crazy
photo mashups.
Playground Physics allows you to uncover and analyze the physics in
what you do.