2020 Summer Practice - Kangaroo This session contains 8 sets of pratices. Each practice has 20 problems. Week 1 - Quiz Solution Video (Part 1) Solution Video (Part 2) Solution Video (Part 3) Presented by Ms. Mandy Meng Week 2 - Quiz Solution Video (Part 1) Solution Video (Part 2) Solution Video (Part 3) Presented by Ms. Mandy Meng Week 3 - Quiz Solution Video (Part 1) Solution Video (Part 2) Solution Video (Part 3) Presented by Ms. Mandy Meng Week 4 - Quiz Solution Video (Part 1) Solution Video (Part 2) Solution Video (Part 3) Presented by Ms. Mandy Meng Week 5 - Quiz Solution Video (Part 1) Solution Video (Part 2) Solution Video (Part 3) Presented by Ms. Mandy Meng Week 6 - Quiz Solution Video (Part 1) Solution Video (Part 2) Solution Video (Part 3) Presented by Ms. Zhen Tian Week 7 - Quiz Solution Video (Part 1) Solution Video (Part 2) Solution Video (Part 3) Presented by Ms. Zhen Tian Week 8 - Quiz Solution Video (Part 1) Solution Video (Part 2) Solution Video (Part 3) Presented by Dr. Yifeng Yu