Phone: 708-748-8105 (classroom/voice) 219-351-0470 (google/text)


Degrees and Certifications:

B.S. Education (Calumet College) B.S. Mathematics (Purdue) Indiana/Illinois Licensure

Mr. Don Hiemstra

Mr. Don Hiemstra


Calumet College of Saint Joseph  (B.S. Education)

Purdue University (B.S. Mathematics)


I’m honored to join the Southland Team as the 10th grade geometry teacher for the 2022/2033 school year. I entered the teaching profession after 30+ years as a small business owner. I have a passion for mathematics and find it a rewarding profession to share experiences and knowledge with students of all ages. My mathematics teaching experience has covered a wide range of grades from 7th grade through college. I was raised on the south side (Calumet Park Il.)  and currently reside in N.W Indiana. I believe students and teachers need to take advantage of the latest technology in education to remain competitive on a global basis.


We use the following instructional tools in class daily:

Google Classroom (classroom management system)

Pearson Geometry (common core text and workbook)

Khan Academy (instruction and assignments)

Edulastic (homework and formative assessments)