Library

A matched-endpoint growth model, with the world total kept separate from country observations.

Use the euro’s territorial history to see how currency changes depend on place and date.

See where language coverage is complex without forcing overlapping language use into a pie chart.

For every mapped place, identify the nearest facility marked as offering scheduled service.

Blend taught sound-spellings and encode simple CVC words.

Describe, sort, and compose shapes by attributes.

Use a familiar care routine and communicate a need.

Control movement and adapt a route to space and access needs.

Determine more, fewer, or equal using matching or counting.

Count with one-to-one correspondence and use the last count word as the total.

A complete lookup sheet: alpha-2, alpha-3, numeric identifier, then the reference name.

A transparent country comparison built from matched population and GDP observations.

Reason about a missing part of a known whole.

Identify, continue, and translate a repeating unit.

Blend and separate speech sounds before attaching print.

Revise meaning and check emerging sentence conventions.

Locate features whose administrative code changes across the source’s geopolitical viewpoints.

A reference map and area model for the source’s lake and reservoir polygons.

A decision reference for separating languages, macrolanguages, locales and scripts.

Represent a place, consider community needs, and explain change over time.