Promoting Mathematical Thinking
  • Promoting Mathematical Thinking ... the home of John Mason & Anne Watson
    • IMP
    • PMThetaAtHome
    • Anne Watson >
      • Anne's PodCasts
      • Publications
      • Concerns
      • ATM triangles
      • Dose of Don
      • ToulouseGrids
    • AW & JM Joint Presentations
    • John Mason >
      • JHM Bio
      • Piranesi Inspired Pictures
      • JHM Presentations
      • Studies
      • Other Projects
      • JHM Publications
      • JHM-Draughty-Drafts
      • Applets >
        • Reasoning Without Arithmetic
        • Number Formats
        • Reasoning about Numbers
        • Reasoning about Graphs of Functions
        • Fractions & Decimals
        • More or Less Grids
        • Calgary Grids
        • Related Polygons
        • Polynomial Studies
        • Polygonal Projections
        • Sundaram Grids
        • Geometrical Applets
        • Structured Variation Grids
        • Animated Situations
        • Outer Inner Area Ratios
        • Clocks
        • Balancing Tasks
        • Linear Algebra

Clock Times

Times can be entered digitally or by dragging a point along the hour hand axis at the bottom (needed because of difficulty controlling dragging of a point around a circle!)

The hands on the outer faces can be dragged freely for reference; the hands on the centre faces are controlled by the time.

Times can be advanced in multiples of 1, 5, 10, 15, 20, 30 and 60 minutes.

​See the Notes file that comes with the app.

App: Clocked
Picture

Multiple Clock Times

Picture
Remainders & the Chinese Remainder Theorem

Up to three clocks showing different numbers of hours can be displayed. Times can be entered and the clock hands show the4 corresponding times. 
The hands can be set, and if they correspond to a genuine time, the hands can be displayed and tyhe Time calculated.

Multiple Clocks Applet
Proudly powered by Weebly