Studying sentence structure or types of sentences such as simple, compound, complex, compound-complex? For a fall or autumn grammar activity, have students complete this grammar coloring activity with ten sentences. Included in this fall grammar activity:√ A coloring sheet (leaves), with each leaf numbered.√ 10 practice sentences. Students will need to identify each sentence as simple, compound, complex, or compound-complex. They will color the sheet according to their answers. √ A coloring key.