Practice your Defense
Make a cardboard shield, decorate it, and practice blocking soft foam balls to improve balance, reaction time, and safe movement.
About this activity
Make a cardboard shield, decorate it, and practice blocking soft foam balls to improve balance, reaction time, and safe movement.
What you need
Step by step
- 1
Step 1
Gather all the materials and bring them to a clear flat workspace.
- 2
Step 2
Lay the cardboard flat and use the pencil and ruler to draw a shield shape about the size of your chest.
- 3
Step 3
Cut out the shield shape with child-safe scissors and ask an adult to help if the cardboard is thick.
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Step 4
Apply strips of tape around the shield edges to make them stronger and smoother.
- 5
Step 5
Wrap the elastic or ribbon around your forearm to check the fit.
- 6
Step 6
Cut the elastic or ribbon to the size you tested.
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Step 7
Tape the ends of the elastic or ribbon to the inside of the shield to create an arm loop.
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Step 8
Decorate the front of the shield using your coloring materials and stickers to make it yours.
- 9
Step 9
Place the soft foam balls or rolled-up socks in a small pile within arm’s reach.
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Step 10
Stand with your feet shoulder-width apart and hold the shield in front of your chest.
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Step 11
Have an adult or partner gently toss a foam ball toward you from a short distance so you can practice blocking.
- 12
Step 12
Practice stepping left or right before each block to keep your balance while defending.
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Step 13
Put away all materials neatly and check your play area for safety.
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Step 14
Share your finished shield and a short note about your practice on DIY.org.
Fun facts
How do you practice your defense with a cardboard shield?
Start by building a sturdy cardboard shield with taped edges and a secure handle or elastic strap. Clear a soft, open space and practice basic stance: knees slightly bent, weight balanced. Have a partner toss soft foam balls gently so you can block, deflect, and move side-to-side. Progress from slow tosses to quicker, unpredictable throws, and include single-leg balance holds and stepping drills to improve reaction time and safe movement.
What materials do I need to make a cardboard shield and practice blocking?
You’ll need a large piece of cardboard, scissors or a craft knife (adult use), duct tape for edges, paint or markers for decoration, and elastic or a hand strap for gripping. Use several soft foam balls or nerf-style balls and a soft surface like carpet or grass. Optional items: safety goggles, extra cardboard for reinforcement, a ruler and pencil for marking, and a partner or parent to toss balls safely.
What ages is this practice suitable for?
Generally suitable for ages 4 and up with close adult supervision for younger children. Ages 4–6 benefit from gentle, slow tosses and simple blocking to build coordination. Ages 7–12 can follow more structured drills to improve balance and reaction time. Teens can practice faster, more complex movements. Always tailor toss speed, drill complexity, and supervision to the child’s motor skills and attention level.
What are the benefits and safety tips for cardboard shield blocking practice?
Blocking practice improves balance, reaction time, hand-eye coordination, and safe movement patterns. It builds confidence and teamwork when done with a partner. Safety tips: use only soft foam balls, reinforce shield edges, supervise young children, clear the area of hard objects, and start with slow tosses. Variations include timed drills, obstacle courses, or using smaller shields to challenge speed and precision while keeping activities low-impact.
Watch & Learn
Need help?
What can we use if we don't have elastic, ribbon, or foam balls listed in the materials?
Use a wide strip of fabric or a shoelace cut to the tested forearm size and taped to the inside of the shield instead of elastic or ribbon, and use rolled-up socks or a small soft stuffed toy in place of foam balls.
My shield bends or the arm loop comes loose during practice — what should we try?
If the cardboard bends, glue or tape a second cardboard layer and if the arm loop loosens, reinforce the taped ends with extra strips of tape or ask an adult to staple or hot-glue them for a stronger attachment.
How can we adapt this activity for younger children or older kids?
For younger children have an adult pre-cut the shield, use stickers and shorter tossing distances, and for older kids make the shield chest-sized, increase toss distance and add tougher foam balls or timed drills.
How can we personalize or extend the shield-making and practice beyond the basic instructions?
Personalize the front with a family crest or painted design, add a second strap to create a hand-grip or extra padding inside, practice blocking combinations while stepping, and share photos and a short note on DIY.org as suggested.