Student's time management

Yesterday I got very upset with a number of my students who had not completed tasks I had told them they had to get done in their own time, because they hadn't finished them during class time.
What am I going to do to ensure they get this done, and that they are motivated to get work done?
No computer until maths tasks are done- computer maths games are to be used for students who are up to date.

Using maths equipment

My maths goal is to use equipment more regularly when teaching my students. Yesterday I was focusing on a knowledge gap- decimal place value and ordering decimals. My students were given decimats and we watched an equipment animation off www.nzmaths.co.nz to introduce them to how a decimat represents decimal place value. I then got the students to show me various numbers by shading in parts of their decimats.

Today I followed on from that lesson but introduced decipipes and decimal arrow cards. The decipipes were fantastic as the students were able to actually see the worth of the number I had asked them to create. They were able to look at numbers other students had made and tell me if it had been made correctly. Once the students seemed confident with the decipipes, I introduced the decimal arrow cards to give them an understanding of how to order decimals. The students were all very engaged because they were able to manipulate the equipment and there was enough cards for everyone to get a few and play with. I noticed a lot of students talking to themselves while they moved the equipment around, and it was a great way of me understanding where they were at with the concept.

I will definitely have to continue to use the various equipment with my lower students as I know they still struggle with decimals.