The Physics Tweaker lets you do all kinds of fun things with the physical properties of your objects.
Your first objective is to reach the Prize Bubble dangling high over the orange rectangle up ahead. At first, your sack person can jump straight through the rectangle. Right now, that’s a good thing! Once your sack person is on the right side of it, select the Physics Tweaker with your Popit Cursor, and press 
to tweak its properties. Set Collisions to On so that your sack person can jump on the object and reach the Prize Bubble. Your sack person must be on the higher platform on the right side to get a running start onto the rectangle. Then, they can easily jump up to collect the Rounded Window Sticker.
Move to the right, and jump on the Bounce Pad platform there. Your sack person needs to leap directly on through the orange rectangle above it. Select its Physics Tweaker, and set Collisions to Off. Now, your sack person can jump onto the little platform above. Select the Physics Tweaker again to solidify the rectangle (turn Collisions on) so your sack person can walk on it safely without falling through.
Although the arrow points you to the left, where your lesson should carry on, it’s a good idea to go right first. That’s because there are two Prize Bubbles stashed away in this hidden room, just waiting to be unleashed. See them perched up there?
At first glance, it seems that the orange rectangle is blocking your sack person from the Prize Bubbles. But if you use your Popit Cursor to select its Physics Tweaker, you can turn off Collisions so that your sack person can pass straight through it. Now jump onto the pumping platform, get underneath the bubbles, and leap to pop them. This grants you the Regal Coat Sticker and Red Skull Sticker.
Return to the left to make your way on through the lesson. Jump for the Prize Bubble along the way—though your sack person may have to get onto the platform ahead and jump back to reach it! This bubble awards the Mist Sticker.
Planting Your Own Physics Tweakers
Now it’s time to start creating your own Tweakers. Climb up the mesh to the next part of your lesson. Here, you can open up your Tools bag from the Popit Menu and select Physics Tweaker. Now, place the Tweaker on the orange ring. See the Bounce Pad and the sponge there? Your sack person should jump on the Bounce Pad, latch onto the sponge, and leap to the platform way up on the left. That means you must be able to travel through the orange ring—hence the importance of the Physics Tweaker.
Once you have planted the Physics Tweaker on the orange ring, select it, and press to adjust the ring’s properties. Turn Collisions off so your sack person can leap straight through it, then use the Bounce Pad and sponge to swing to the next platform on the left.
In the next room, place a Physics Tweaker on the moving orange platform. Use it to turn Collisions off so your sack person can safely jump across the spikey gap without getting squished into a breakfast pancake. Once past the gap, turn Collisions back on to use it as a platform that your sack person can jump on to reach higher levels.
Place a Physics Tweaker on the orange rectangle in the upper-right corner, and turn Collisions off to release the Prize Bubbles for the Hexagon Outline–Pure White and Long Black Gradient Sticker.
Weight Lifting
Changing the weight of an object can be very uplifting, or it can weigh things done in an actual good way. Give it a try on the pulley above the seesaw up ahead. Place a Physics Tweaker on this orange object, and hold 
as you’re doing so to tweak it.
Now, select Change weight: yes, and increase the weight below that option to about 30. Maneuver your sack person onto the other side of the seesaw to launch them into the air. Pop those Prize Bubbles for the Pinball Pull Plate Decoration and Angle Bracket Decoration on your way to the next platform on the left.
Up ahead, do the same thing to the orange box to put some weight on those springs. Increasing the weight to about 70 allows your sack person to jump on the platform, collect the Stick House Sticker Prize Bubble, and start climbing the net with 
. There’s yet another Prize Bubble that holds the Pine Leaves Decoration at the top.
Go left first to find two Prize Bubbles perched on a springy platform. Place a Physics Tweaker on the orange box inside the platform. It’s difficult to get the exact weight to launch the Prize Bubbles up and over the wall to your sack person. The trick is weighing it down first, then decreasing the weight to zero so the platform bounces high on the springs. Your rewards are the Pinball Object and Margin Doodle 3 Sticker.
Next, head to the right to carry on with your lessons. Place a Physics Tweaker on the orange rectangle here, and decrease its weight so your sack person can push it. Now, your sack person can jump to the platform behind it and progress around this obstacle and on to the end of the lesson.
