
    Given n distinct learning concepts, determine the number of unique ways to organize these concepts into study modules, where each concept must be assigned to exactly one module and modules can contain any number of concepts. Each different arrangement represents a potential personalized learning path, and a concept cannot be split across multiple modules.
    

    
def bell_number(n):
    """
    Given n distinct learning concepts, determine the number of unique ways to organize these concepts into study modules, where each concept must be assigned to exactly one module and modules can contain any number of concepts. Each different arrangement represents a potential personalized learning path, and a concept cannot be split across multiple modules.
    

    """
def bell_number(n):
    """
    Given n distinct learning concepts, determine the number of unique ways to organize these concepts into study modules, where each concept must be assigned to exactly one module and modules can contain any number of concepts. Each different arrangement represents a potential personalized learning path, and a concept cannot be split across multiple modules.
    

    """
    bell = [[0 for i in range(n + 1)] for j in range(n + 1)]
    bell[0][0] = 1
    for i in range(1, n + 1):
        bell[i][0] = bell[i - 1][i - 1]
        for j in range(1, i + 1):
            bell[i][j] = bell[i - 1][j - 1] + bell[i][j - 1]
    return bell[n][0]