Dazzle Ships Experiment Setup: You require a room with a multimedia projector and a visualiser or webcam. Tabletop theatre with adjustable lighting and built-in protractor (North is ‘away from the visualiser’) and mounting point for ships. The visualiser should point into the front of the theatre so that the protractor is not visible onscreen. Students need a device with access to the internet and a link to the survey at https://www.surveymonkey.co.uk/r/RazzleDazzlePhoenix
 Steps for teacher to follow: 1. Select a student to put their ship on the spindle out of sight of the class. 2. Show boat to class – students fill in first few steps of questionnaire. 3. Meanwhile, place ship on spindle at angle of student’s choosing. Keep this quiet! Teacher records angle. 4. Project image of the ship (in the theatre with the protractor not visible!) on the screen. 5. Students estimate angle and fill in survey. 6. Repeat step 3 -5 at the same angle with the ‘control’ ship. 7. (optional) tell students what the correct angle was. BEWARE – this ‘trains’ students and may affect accuracy of later results. Improvement over time is a useful but statistically tricky hypothesis to test. 8. (optional) repeat with the same ship in different ‘weather conditions’, i.e. different painted backdrop and lighting levels;- Dusk, overcast and bright sunlight. 9. Students press ‘done’ in their survey. 10. Students reload survey. 11. Repeat with further ships. 12. When complete, the teacher can look at the results of the survey / give prizes for the most accurate spotter etc. Results are stored in SurveyMonkey – but the correct answers aren’t. The teacher will need to keep a record of correct angles to do any analysis (or to get the student to!) Further notes: Hypotheses which you may choose to consider are: Type of patterning affects accuracy of estimates. Estimates with the control ship are closer than the Razzle Dazzle ship (i.e. does Razzle Dazzle work?) Colour of ship affects accuracy of estimates. Weather conditions affect accuracy of estimates. Age of spotters affects accuracy of estimates. Telling students the correct answer after their estimates affects accuracy of future estimates. A further session will be needed to analyse the results. The more data collected, the more reliable the results will be. Background to 1917
optical illusion
fashion and contemporary design
dazzle results sheet
student plan for ship
a community interest company