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Coding · Ages 10+ · Set A
Bo learns to sense
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Remember: A robot senses, decides with a rule, then acts, again and again. A sensor measures the world, and a robot knows only what its sensors tell it.

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The robot that bumpedBo the robot trundles through a dark room, following his steps perfectly, and bump! He walks straight into the table leg, because his steps did not say to turn. Mr. Reyes says a robot needs senses too, and they are called sensors. A light sensor measures how bright it is, a touch sensor is like a whisker, and a sound sensor is like an ear. A distance sensor sends out a tiny ping of sound, and the longer it takes to come back, the farther away the table is. A robot does three things over and over: it senses the world, it decides with a rule, and it acts. Bo's new rule says that if the table is close, he turns, or else he goes forward. At noon a big cloud drifts over, the room dims, and Bo's lamp turns on.
1
Bo bumped into the table. What does he need to notice it?
📡A sensor👣More steps🔊A louder voice
2
The table is close. What does Bo's rule make him do?
Go forwardBeepTurn
3
At which daylight does Bo's lamp first turn on?
☀️Sunny☁️Cloudy🌆Dusk
4
When the cloud made the room dim at noon, Bo was being silly.
TrueFalse
5
A robot knows only what its sensors tell it.
TrueFalse
6
A robot senses, with a rule, then acts.
decidessleepssings

Match, order and fix

7
Join each job to its part of the cycle.
  1. 1read a sensor
  2. 2check the rule
  3. 3turn a wheel
  • Adeciding
  • Bacting
  • Csensing
8
Join each sensor to what it measures.
  1. 1a light sensor
  2. 2a sound sensor
  3. 3a touch sensor
  4. 4a distance sensor
  • Ahow loud it is
  • Bhow bright it is
  • Chow far away something is
  • Da bump or a press
9
Bo avoids the table. Put the cycle in order.
  • Bo's rule says: if the table is close, turn
  • Bo's wheels turn him away
  • Bo's distance sensor pings and finds the table is close
10
Mina says: Bo bumped, so I will give him more steps. What is the mix-up to fix?
Steps are a kind of sensorSteps say what to do, but only a sensor shows what is thereBo needs a lamp
11
Bo's ping takes longer to come back than before. Is the table nearer or farther away?
NearerFarther away
12
Write one sensor you could find at home, and what it senses.
13
Draw Bo with a sensor, and show what it senses.
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