The phrase "activities were introduced" is correct and usable in written English.
It can be used when discussing the implementation or initiation of certain activities in a specific context, such as a program, event, or curriculum.
Example: "In the new educational program, various activities were introduced to enhance student engagement and learning."
Alternatives: "activities were implemented" or "activities were launched."
Longer recess periods with organized physical activities were introduced, and students were also instructed by their peers (recess activators).
A 10-min satellite communication delay and other limitations pertinent to human planetary surface activities were introduced.
Additionally, the a long-term sustainability plan and the expansion of water-quality activities were introduced by state and federal governments, and their partner agencies.
Off-camera interviewer and consultant Anthony DeCurtis helped maintain its historical and conceptual accuracy, and overall, the presentation achieves its goal--to enlighten the viewer on not only Baez's life, but on national and international causes where non-violent activities were introduced to bring about peace and change.
To elucidate the possible implications of the above findings to the viral lifecycle, vRNP combinations with the strongest (Fig. 1A, lanes 9 12) and weakest (Fig. 1A, lanes 5 8) polymerase activities were introduced into recombinant viruses by reverse genetic techniques.
In addition, youth-specific CM activities were introduced in schools, and project drivers were trained to become part-time CM staff.
CM fundamentals and related engineering activities are introduced briefly.
Towards the end of the day, physical exercise and craft activities are introduced as the pupils' concentration lessens.
To describe the non-ideal mixture behaviour, liquid-phase activities are introduced.
Obtained activities are introduced as input into another MC model to estimate doses produced by them.
The curriculum and teaching are adapted to each child's individual abilities and interests, and activities are introduced when children are best suited to master them.
