'express their knowledge' is correct and usable in written English.
You can use it to emphasize that someone should be sharing their knowledge or expertise. For example: "The teachers were expected to express their knowledge to help the students understand the material."
On the other hand, human beings can contrive to express their knowledge for evaluation by using heuristic expressions, although a target system is complicated.
The lessons and activities encourage students to creatively express their knowledge and understanding of African-American history.
I wanted my pupils to be able to read, speak and write like historians; to be able to express their knowledge and understanding of history in language.
Some of our students are very good with ideas and they understand the debates surrounding theology, but when it comes to writing formal essays, this might not give them the scope to express their knowledge and understanding".
Our lessons provided an opportunity for the students to express their knowledge through modeling, drawing, and selected response activities.
The paper proposed a technique for generation of erroneous answers and explanations, including knowledge descriptions enabling teachers to easily express their knowledge.
Subordinate animals had learned the associations, but expressed their knowledge only when segregated from higher-ranking animals.
Similarly, in the case of potable water, almost all target groups have expressed their knowledge regarding how water could/should be purified but a negligible number of people are using the knowledge they have because of unaffordable water purifying substances.
Less-educated women have low decision-making power in their families and are not accustomed to expressing their knowledge and opinions to others, especially to those with higher educational or social status.
Every day, students were challenged to express their gained knowledge through a variety of media and to employ critical thinking skills while attempting to make connections across disciplines.
Expert nurses sometimes find it difficult to explicitly express their skilled practical knowledge as statements of principles or rules for action, as this embodied practical knowledge is complex.
