Junior School: Reading Local Maps and Community Data

Junior School: Reading Local Maps and Community Data

A community question often needs both a spatial answer and a numerical one. Where could a reading session be held? Which area returned the most requests? Those questions cannot be answered by a map symbol alone. This activity combines a fictional neighbourhood map with a complete invented household-response table, then asks what the combined evidence can and cannot support.

Teacher-use draft for junior school. Learners need compass directions, addition and simple percentages; exact grade, strand and term placement remains for review. Maro Corner is an invented place. Its map geometry is retained from the earlier map-key activity so the new work can focus on connecting routes and statistics. No survey or real journey is required.

The complete map and key

North is towards the top of the following grid. Each labelled junction connects only to its immediate horizontal and vertical neighbours. There are no diagonal roads. The grid is a schematic, not a scale drawing: use the listed road lengths, never a ruler on the screen.

Key: A–I are junction identifiers; the bracketed L, C, G, S and W identify the stated facilities. A junction letter and a facility symbol have different jobs. For example, junction G contains the school [S]; the garden [G] is at F. These symbols belong to this exercise, not a universal mapping standard.

The library is north of the water point and west of the clinic. The school is in the southwest part of the grid. Facility symbols show the named locations, not opening hours, capacity or permission to hold an event. “No steps recorded” does not establish surface quality, slope, crossings or complete accessibility.

The supplied community record

The fictional organiser sent one form to every household in the three areas. At most one reply per household was counted. Each reply answered whether the household wanted a reading session. Counts are deliberately supplied as complete teaching data; they describe no real community. Area names identify broad groups, not household addresses or exact positions on roads.

Worked comparison: a count and a proportion answer different questions

East returned the largest number requesting a session: 32. Centre had the largest proportion among its respondents: 18 ÷ 30 × 100 = 60%. West has 16 ÷ 32 = 50%, and East has 32 ÷ 80 = 40%. Neither statement contradicts the other because the responding groups differ in size.

Response rates also differ: West 32 ÷ 40 = 80%; Centre 30 ÷ 60 = 50%; East 80 ÷ 100 = 80%. Centre’s 60% preference figure describes the 30 replies, not all 60 households sent forms. The other 30 households’ preferences remain unknown. The overall proportion requesting a session among replies is 66 ÷ 142 × 100 ≈ 46.5%. Do not average 50%, 60% and 40% to obtain the combined result: those percentages have unequal denominators.

Worked route and planning answer

For a possible session at library B, compare two routes from school G. G–H–E–B totals 100 + 120 + 120 = 340 m but uses the E–H steps. G–D–E–B totals 140 + 100 + 120 = 360 m and avoids that link. Among these two supplied alternatives, avoiding the steps adds 20 m. No walking speed is supplied, so there is no justified journey-time answer.

A model conclusion is: “The record contains 66 requests from 142 responding households. The library is a possible mapped venue, and the 360 m school–D–E–library route avoids the marked steps. Before choosing the venue, the organiser still needs capacity, availability and fuller access information. Household requests do not tell us how many people will attend, and the map does not show every household’s journey.” This connects the evidence without turning a survey response into a booking or an access guarantee.

Independent task

1. A statement says, “Most East households requested a session because East has the largest request count.” Repair it using the right numbers.
2. The E–B link is unavailable in a revised map record. Compare G–D–A–B with G–H–I–F–C–B. Give each length and identify the shorter of these two routes.
3. Can the organiser conclude that Centre has the greatest community-wide demand from its 60% figure? Name the missing evidence.

Checked answers and review notes

East supplies the largest recorded count, 32, but that is 40% of its 80 replies and 32% of the 100 households sent a form. The first percentage is the preference among respondents; the second is the share of all contacted households with a recorded request. The 20 nonresponding households remain unknown.

G–D–A–B is 140 + 140 + 100 = 380 m. G–H–I–F–C–B is 100 + 100 + 140 + 140 + 100 = 580 m. Both avoid E–B and the E–H steps; the first is 200 m shorter among these two options. A different proposed route must be checked against the complete links rather than accepted because it looks straight.

Centre’s figure does not establish community-wide demand. Its nonrespondents may differ from its respondents, and household preferences do not determine the number of attendees. Obtain suitable further evidence before expanding the claim. A strong answer reports a count with its denominator, follows only supplied links, distinguishes distance from travel time, and states the unresolved planning conditions.

Map-reading reference: USGS on map symbols and legends. The native map, exercise symbols and community figures are original fictional teaching material; they are not USGS mapping of a real place.