100s Chart Arcade
Auto-fit chart for fullscreen (buttons stay working!)
Class Prompt
students click on the chart
Live Session
Code:
No last names
Practice

Count To (Random): students must click tens first (10,20,30...) then ones to reach the target.
Teacher Mode
build prompts + count-to
1 more/less or 10 more/less:
1 more
1 less
10 more
10 less
Start number (1–100)
 
Great for small group or whole class call-and-response.

Count to a number (tens then ones):
Target number (1–100)
 
Tens then ones
Tens OR ones
Students click: 10, 20, 30... then 41, 42... until the target.

Count on (by ones):
Start (1–100)
Stop (1–100)
Students click every number in order from Start to Stop.
+1 only
+10 or +1