Measuring length k

Hi this term in maths we are learning about measurement.The first slide is shortest to tallest and shortest to longest.The next slide is about worms. Of shortest to longest.The 3rd slide is about wide and narrow. The 4th slide is about trains.the top train you have to put more carriage.The 5th slide is about adding subtracting and measuring.The 6th slide is about multiplying and measuring.