The Science Museum of Minnesota has dealt with this concern by adding "Experiment Cards" to the labs that suggest tasks with easy, moderate, and challenging levels of difficulty.
Aggressive service conditions prevailing in chemical process plants, such as elevated temperature and pressure and corrosive environments, stretch the safety operating limits of engineering materials and components at challenging levels of endurance and reliability.
The concurrent tasks, tone sequence comparison and visual array comparison, were the same across all conditions within each experiment, and challenging levels of difficulty were chosen so that the tasks were unlikely to be accomplished using only automatically-activated memory buffers.
They should be taught at a challenging level and make students aware of careers that are now being ignored.
Interactions of AT-IT group and level would show that at least one group was more willing to invest additional effort to perform well on the more challenging Level 2 tests, and interactions of AT-IT group and interview would reveal greater training gains for one group over another.
Whatever we may think of the bleed-through among media platforms, it's not surprising that certain sequences in "The Walking Dead" resemble challenging levels on "Call of Duty" and that "Game of Thrones" makes the body count of "The Hobbit" look quaint.
The staff of Edge praised the main game as "absorb[ing]" due to its high level of difficulty, noting that the trial and error required to complete challenging levels forces one to learn the nuances of its "reductive control system" and eventually enables the player to perform seemingly impossible tasks with increasing ease: "Once a level falls, the mysticism around it vanishes.
After a second i.p more lethal challenging, parasitemia levels of all surviving animals were effectively controlled in those antibody-administered animals, while animals belonging to control groups either became rapidly infected or died after 4 days of the second challenge.
As above, after a second i.p more lethal challenging, parasitemia levels of all surviving animals were effectively controlled in those antibody-administered animals, while animals belonging to the control group became rapidly infected or died after 3 days of the second challenge.
Overall, the program was fairly successful in maintaining a challenging yet rewarding level of play.
