CK-12 Foundation
Seasons: Shadow Lengths
Before iPhones and calendars, how did humans determine the seasons of the year? Middle school scientists discover how to use shadows to determine the time of year in an enlightening interactive. Pupils manipulate the sun and examine the...
CK-12 Foundation
Seasonal Changes in Plants: Leaf Pigment
Leaves fall off the tree in the autumn, but why do they change colors? The interactive covers the role of chlorophyll and photosynthesis. It also explains both carotenoids and anthocyanins.
Curated OER
The Netherlands: Prepositions and Past Simple
For this prepositions and past simple worksheet, students fill in the blanks to sentences with prepositions, put sentences into the past simple form, answer true and false questions, and more. Students complete 4 activities.
Curated OER
Past Simple and Prepositions
In this past simple and prepositions worksheet, students put prepositions into sentences, put sentences into the past simple tense, and more. Students complete 5 activities.
Curated OER
Daily Routine
In this daily routine worksheet, students listen to sentences and match them to pictures, sequence sentences, and solve a crossword. Students complete 3 activities about a daily routine.
Curated OER
ESL: Tenses in Passive Voice
In this ESL passive voice tense worksheet, students fill in blanks in sentences, writing verbs in proper tense and passive voice.
Curated OER
ESL: Continuous Affirmative/Present Simple
In this ESL verb tense activity, students read about simple present and present continuous tense, then use correct verb forms to fill in blanks in sentences.