Cover lesson · MFL: Spanish · Year 10 · Intermediate
LNF: Numeracy → Learning that statistics represent data and that probability models chance helps us make informed inferences and decisions → Interpreting data
Name: Class: Date:
What this practises: interpreting data: reading a table and a chart, using mean, median and range to compare two groups, spotting an outlier, testing claims against the data and noticing a misleading graph. It builds towards WJEC GCSE Spanish (Made for Wales, first teaching 2025), Unit 4 Reading and Writing, Areas of content, page 18: numbers, fractions and graphs in Spanish texts. Pupils taught through Welsh may answer in Welsh.
Print: this sheet, one per pupil, and the stimulus sheet “A Spanish survey: El tiempo libre de los jóvenes de Montealbar”, one between two. Calculators are allowed. The figures are also in montealbar-encuesta-tiempo-libre.csv, but no computers are needed. No dictionaries and no online translators: they are not allowed in GCSE Spanish.
Run: 6 min Step 1, numbers and fractions · 7 min Step 2, reading Tabla 1 · 8 min Step 3, fractions and percentages · 10 min Step 4, mean, median and range · 9 min Step 5, checking the claims · 5 min Step 6, the misleading chart · 8 min Step 7, writing in English and Spanish. Total 53 minutes.
Quick checks you can make without Spanish: Step 3: sport 2/3, 11/20, 2/5 and 54% overall; reading 1/2, 1/3, 3/10 and 37.3% overall. Step 4: youngest group mean 8, median 8.5, range 5; oldest group mean 16, median 13.5, range 28, with one outlier of 38 hours. Step 5: claims 3 and 4 are not supported; claims 1, 2, 5 and 6 are supported. Step 6: the chart’s axis starts at 7, not 0.
Collect: this sheet. The class teacher has a worked example with every answer.
A youth centre in Montealbar, a town in Spain, asked 300 young people aged 12 to 17 how they spend their free time. Its magazine printed an article with six claims and a bar chart. You will read the Spanish numbers and fractions, work with the survey’s own tables, compare two groups with averages, and decide which claims the data really support. One claim relies on a misleading chart, and one relies on an average that an extreme value has pulled up.
Find each phrase in the article on stimulus page 1. Write it in figures, as a fraction and a percentage, or in English, as fits.
| Spanish | Figures, fraction and percentage, or English |
|---|---|
| trescientos | |
| ciento veinte | |
| dieciséis | |
| la mitad | |
| un tercio | |
| dos de cada tres | |
| cuatro de cada cinco | |
| diecinueve de cada veinte | |
| tres horas y media | |
| 8,5 | |
| casi el doble | |
| exactamente el doble |
(a) Which activity takes the most hours in every age group?
(b) Work out the change in hours per week from the 12 and 13 group to the 16 and 17 group for each activity. Use + for a rise and − for a fall.
| Redes sociales y vídeos | Deporte | Videojuegos | Quedar con amigos | Leer por placer |
|---|---|---|---|---|
(c) Which activity rises and then falls? Which two activities exactly double or exactly halve?
For each age group, write the number who said yes as a fraction of the group, simplify it, then give it as a percentage to 1 decimal place. For the total column, give the percentage only.
| Question | 12 y 13 años (out of 90) | 14 y 15 años (out of 120) | 16 y 17 años (out of 90) | Total (out of 300) |
|---|---|---|---|---|
| Hacen deporte tres veces o más por semana | ||||
| Leen por placer cada semana |
Why is the 14 and 15 group’s count for sport (66) bigger than the 12 and 13 group’s (60), even though a smaller share of them do sport?
Use Tabla 3, the one-week diary of hours of social media and videos.
| Group | Values in order | Mean | Median | Range |
|---|---|---|---|---|
| 12 y 13 años | ||||
| 16 y 17 años |
(a) Which value is an outlier? Work out the mean and median of the 16 and 17 group without it (mean to 1 decimal place).
(b) Which average gives the fairer picture of the 16 and 17 group: the mean or the median? Explain why.
(c) Write one sentence comparing the two groups. Use an average and the range.
Test each numbered claim in the article against Tablas 1, 2 and 3. Write supported or not supported, and give the figures that prove it.
| Claim | Supported or not supported? | Evidence: the figures and your calculation |
|---|---|---|
| 1 | ||
| 2 | ||
| 3 | ||
| 4 | ||
| 5 | ||
| 6 |
(a) Look at the scale on the chart. What is wrong with it?
(b) Measure or work out the height of the first and last bars above the bottom of the chart, in hours. How many times taller does the last bar look? How many times bigger is 13,5 than 8,5 really?
(c) How should the chart be drawn so that it is fair?
(a) Write two sentences in English describing the main trend in how free time changes between 12 and 17. Use figures from Tabla 1.
(b) Write two sentences in Spanish: one giving your own figure for a week (for example, how many hours you spend on social media or sport), and one giving your opinion of a result, with a reason. Write the numbers the Spanish way. Use: paso … horas por semana, hago deporte … veces por semana, creo que, me sorprende que, porque, la mitad, dos de cada tres, casi el doble.