Activity synopsis

No. of 90 min. lessons

The first cycle: Sampling
methods (a population of 496 students)

Activity 1: The real world: time to ask
and time to sample (n=18)

4.5

Introduce to the main topic of the
project (“Children make a change”) and the subtopic of the first cycle
(technology); participate in an EDA activity following the statistical
investigative cycle; present investigations.

Activity 2: The probabilistic world: The strings
activity (n=10 out of 18 strings)

2.5

Explore bias and random sampling
methods by drawing samples from a population and compare between the drawn
samples; reason with SGDs.

The second cycle: First
random sample (a population of 1,300 students)

Activity 3: The real world: Data
collecting (n=60)

2

Introduce to the activity context
(sports and gender) and the online questionnaire; plan the random sampling
method (a raffle), and collect data (15 grade 2, 4 and 6 students
from their school and 15 eighth graders from
their future middle school).

Activity 4: The real world: data analysis
of the first sample (n=60)

2

Investigate a random sample (60
cases, 27 variables) using TinkerPlots; model conjectures about the
population (handson); present investigations.

Activity 5: The probabilistic world: Model the
population and draw random samples (n=60)

3

Model a conjecture about the
population (TinkerPlots); investigate random simulated data samples (60 cases,
without replacement), invent methods to compare between
samples; present investigations.

Activity 6: The probabilistic world: What can we
learn from 100 samples? (n=60)

1

Generate and reason with SGDs of 100
samples; present investigations.

Activity 7: The
probabilistic world: The
minimal and trustworthy possible sample.

1

Search and choose the minimal and
trustworthy sample that can be collected by the students; present
investigations.

The third cycle: Second
random sample (a population of 1,300 students)

Activity 8a: The real world: Collect and
investigate the second sample (n=105)

2

Collect additional random sample (15 students
of grades 2, 4 and 6); Investigate a random data sample (105 cases, 2
variables) using TinkerPlots; present investigations.

Activity 8b: The probabilistic world:
Model
the population and reason with a SGD (n=105)

1

Model conjectures about the
population using the Sampler, draw and compare between random samples taken
from the constructed model, reason with the SGD.

Total number of 90minute lessons:

19



