Living School · Chapter 4
Neft City: Flood Grid
Heavy rain is flooding Neft City! Sensors report elevations and sit on a city grid. Your team must read the data and decide where to place a new pump. Ready to help?
We use this on your final report.
Add your name and pick a role to begin.
🏛️ Mission Briefing
Mayor Reyes
Welcome to the team! A huge storm is flooding Neft City. Our 8 sensors report how high or low each spot is compared to sea level, and each sensor has a spot on the city grid. Help us read the data and place a new pump.
🎯 Your Mission Goals
- 1 Order the elevations from least to greatest.
- 2 Plot the sensors on the coordinate plane.
- 3 Reflect a point across an axis.
- 4 Find distance using absolute value.
- 5 Recommend where to place the pump, using evidence.
New word? Tap a blue word to see what it means:
🌊 Sensor Lab
The 8 sensors report elevations in meters compared to sea level. A negative number means below sea level. Click the numbers in order from least to greatest.
Step 1 · Order the elevations
Click a number to place it in line. Click a placed number to send it back.
Elevations to order
Ordered line (least → greatest)
Step 2 · Compare the elevations 🔒 Locked
Remember: the further below sea level, the lower (more negative) the number. After two tries you'll get a hint.
🗺️ Plot the Sensor Grid
Pick a sensor, then click the grid cell at its (x, y) location. Click a placed pin to remove it. The axes cross at the origin (0, 0).
Sensors to plot — tap one to select
Reflect & measure 🔒 Locked
🗳️ Decision Room
City Council
Where should Neft City place the new flood pump? Choose one recommendation, then explain it with evidence from the elevations and the grid.
Explain with evidence
Use at least two pieces of evidence from the elevations and grid. (At least 18 words.)
0 words
🌆 City Reaction
City Status
🔬 Enrichment Challenge: Mirror City (optional)
A backup map mirrors every sensor across the y-axis. Reflect sensor S4 (5, −2) across the y-axis, then find the distance between S4 and its mirror.
Why is the distance found by adding the absolute values of the x-coordinates?
In your own words, what does reflecting across the y-axis do to a point? (1 sentence)
📰 Neft City News
Write a short public report: 3–5 sentences about the flood, what the sensor data showed, and where Neft City should put the pump. (At least 35 words.)
Word bank — tap to add
Sentence frames — tap to add
0 words
📋 Read my report checklist
🪪 Proof-of-Learning Passport
Neft City · Living School
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Mission: Flood Grid — Completed
Skills demonstrated
City Outcome: —